Publications
2025
Yu, D and C Hwang*. Optimizing SWOT fast-sampling data for marine gravity recovery: lessons for the 21-day science phase. Remote Sensing of Environment, revised, 2025. Optimizing SWOT fast-sampling
Hung, WC, C Hwang*, L Tosi, GZ Lin, SH Lin, and YA Chen. Near real-time subsidence monitoring and AI forecasting with multi-depth extensometers, Engineering Geology, under review, 2025.
Chen, KH, C Hwang*, JW Lee and WC Lo. Estimating aquifer separations and storage coefficients via sequential pumping tests and geodetic measurements in the Choushui River Alluvial Fan, Taiwan, Engineering Geology, under review, 2025.
Zhang, L, C Hwang*, HY Liu, ET Chang, and D Yu. Automated Eddy Identification and Tracking in the Northwest Pacific Based on Conventional Altimeter and SWOT Data. Remote Sensing, 17(10), 1665, 2025
Wei SH, and C Hwang*. Land subsidence near Hanford and Corcoran, California, from Cryosat-2 altimetry and Sentinel-1A SAR imagery. Terrestrial, Atmospheric and Oceanic Sciences, 36(1), 6, 2025.
Hwang, C*, CY Kuo, HC Shih, WH Huang, and WH Lan. Depth modernization by integrating mean sea surface model, ocean tide model and precise ship positioning, Journal of Geodesy, 99(3), 26, 2025.
2024
Hwang, C* & D Yu. Transforming coastal mapping from space. Science, 386(6727), 1222-1223, 2024.
Zhou, R, X Liu, J Guo, C Hwang, J Jia, X Chang, HP & Sun. Inverting Vertical Gravity Anomaly Gradients Using Multidirectional Data from Mean Sea Surface Model: A Case of Arabian Sea. Earth, Planets and Space, 2024, 76:170.
Li, Z, J Guo, J, C Zhu, X Liu, C Hwang, S Lebedev, X Chang, A Soloviev & H Sun. The SDUST2022GRA global marine gravity anomalies recovered from radar and laser altimeter data: Contribution of ICESat-2 laser altimetry. Earth System Science Data, 1-27, 2024.
Hung, WC, C Hwang*, SH Lin, CS Wang, YA Chen, PJ Tsai, KC Lin. Exploring groundwater depletion and land subsidence dynamics in Taiwan’s Choushui River Alluvial Fan: insights from integrated GNSS and hydrogeological data analysis. Frontiers in Earth Science, 12, 1370626, 2024. doi: 10.3389/feart.2024.1370626
Yu, DC, Z Weng, C Hwang*, H Zhu, J Luo, J Yuan, and S Ge. Seamount detection using SWOT-derived vertical gravity gradient: an automatic identifying algorithm, Geophysical Journal International, 237, 1780–1793, 2024.
Wang, CY, Y Lin*, C Hwang*, and C K Shum. Observing glacial isostatic adjustment by PSInSAR in southern Hudson Bay, Remote Sensing of Environment, 304, 114023, 2024.
2023
Ran, J, L Liu, G Zhang, CK Shum, J Qiu, R Hu, J Li, J Peng, C Hwang, Y Luan, Y Sun, M Xu, D Chen, J Ding, and Y Zhong. Contrasting Lake Changes in Tibet Revealed by Recent Multi-Modal Satellite Observations, Science of the Total Environment, 168342, 2023.
Yu, DC, C Hwang*, H Zhu, and S Ge. The Tikhonov-L-curve regularization method for determining the best geoid gradients from SWOT altimetry, Journal of Geodesy, 97(10), 93, 2023.
Huang, Z, X Wu, W Hang, C Hwang and X He. Monitoring Inland Water Quantity Variations: A Comprehensive Analysis of Multi-Source Satellite Observation Technology Applications. Remote Sensing, 15(16), 3945, August 2023.
Hsiao, YS, C Hwang*, TW Chen, YH Cho. Assessing models of sea level rise and mean sea surface with Sentinel-3B and Jason-3 altimeter data near Taiwan: impacts of data quality and length, Remote Sensing, 15(14), 2023.
Tao, D, YS Cheng, C Hwang*, W Sun, and HK Lee. The rise and fall of Alaska glaciers detected by TOPEX/Poseidon and Jason-2 altimeters using a novel glacier-threshold method, Journal of Geophysical Research-Earth surface, 128, e2022JF006977, 2023.
Chao, NF, S Wang, G Ouyang, C Hwang*, T Jin, C Zhu, A Abulaitijiang, S Zhang, L Yue, G Chen, Y Zhang. An improved triple collocation-based integration of multiple gravity anomaly grids from satellite altimeters: contribution of ICESat-2, Remote Sensing of Environment, 292, 113582, 2023.
Hung, W. C., Hwang*, C., Tosi, L., Lin, S. H., Tsai, P. C., Chen, Y. A., Wang, W.J. & Ge, S. Toward sustainable inland aquaculture: Coastal subsidence monitoring in Taiwan. Remote Sensing Applications: Society and Environment, 100930, 2023.
Chen, K H, Hwang*, C, Tanaka, Y, & Chang, P. Y. Gravity estimation of groundwater mass balance of sandy aquifers in the land subsidence-hit region of Yunlin County, Taiwan. Engineering Geology, 107021, 2023.
2022
Lien, TY, ETY Chang, C Hwang, CC Cheng, KF Lam, RF Chen and CH Mu. Delineating a volcanic aquifer using groundwater-induced gravity changes in the Tatun Volcano Group, Taiwan, 33(1), 1-17, Terr. Atmos. Ocean. Sci., 2022.
Guo, J, X Deng, and C Hwang. Application of Satellite Altimetry in Marine Geodesy and Geophysics (eds). Frontiers in Earth Science, May 09, 2022. https://doi.org/10.3389/feart.2022.910562
Yu, DC and C Hwang*. Calibrating error variance and scaling global covariance function of geoid gradients for optimal determinations of gravity anomaly and gravity gradient from altimetry, Journal of Geodesy, 96(61), 2022.
Li, X, JL Huang, R Klees, R Forsberg, M Willberg, C Slobbe, C Hwang, and R Pail. Characterization and stabilization of the downward continuation problem for airborne gravity data, Journal of Geodesy, 96(4), 2022.
2021
Hwang, C*, WB Shen, X Li and A Md Din. Introduction to the special issue on gravity and geoid in the Asia Pacific. Terr. Atmos. Ocean. Sci., 32, 1-4, 2021. doi: 10.3319/TAO.2021.12.30.01
Huang, W, CC Cheng, C Hwang*, D Yu, TW Chen, and Y.T. Chen. The 2021 gravimetric and hybrid geoid models for Taiwan and offshore islands: application to a seamless vertical datum. Terr. Atmos. Ocean. Sci., 32, 1-14, 2021. doi: 10.3319/TAO.2021.10.19.01
Chen, KH, C Hwang*, LC Chang, and Y Tanaka. Infiltration coefficient, percolation rate and depth-dependent specific yields estimated from 1.5 years of absolute gravity observations near a recharge lake in Pingtung, Taiwan, Journal of Hydrology, 127089, 2021.
Yu, DC, C Hwang*, OB Andersen, ETY Chang, and L Gaultier. Gravity recovery from SWOT altimetry using geoid height and geoid gradient, Remote Sensing of Environment, 265, 112650, 2021.
Yuan J, JY Guo, C Zhu C, C Hwang, DC Yu, MZ Sun, D Mu. High-resolution sea level change around China seas revealed through multi-satellite altimeter data. International Journal of Applied Earth Observation and Geoinformation, 102, 102433, 2021.
Tangdamrongsub, N, C Hwang, JS Borak and JC Han. Optimizing GRACE/GRACE-FO data and a priori hydrological knowledge for improved global terrestrial water storage component estimates, Journal of Hydrology, 598,126463, 2021.
Hung WC, C Hwang*, M Sneed, YA Chen, CH Chu, and SH Lin. Measuring and interpreting multilayer aquifer-system compactions for a sustainable groundwater-system development, Water Resources Research, e2020WR028194, 2021.
Hwang, C*, SH Wei, YS Cheng, A Abulaitijiang, OB Andersen, NF Chao, HY Peng, KH Tseng, and JC Lee. Glacier and lake level change from TOPEX-series and Cryosat-2 altimeters in Tanggula: comparison with satellite imagery, Terrestrial, Atmospheric and Oceanic Sciences, Vol. 32, 2021.
2020
Hwang, C*, HJ Hsu, WE Featherstone, CC Cheng1, M Yang, W Huang, CY Wang, JF Huang, KH Chen, CH Huang, HC Chen and WY Su. New gravimetric-only and hybrid geoid models of Taiwan for height modernisation, cross-island datum connection and airborne LiDAR mapping, Journal of Geodesy, 94(9), 1-22. 2020.
Chen, KH, C Hwang*, LC Chang, JP Tsai, TC Jim Yeh, CC Cheng, CC Ke and W Feng. Measuring aquifer specific yields with absolute gravimetry: result in the Choushui River Alluvial Fan and Mingchu Basin, central Taiwan, Water Resources Research, e2020WR027261, 2020.
Mouyen, M, P Steer, KJ Chang, N Le Moigne, C Hwang, WC Hsieh, L Jeandet, L Longuevergne, CC Cheng, JP Boy, and F Masson. Quantifying sediment mass redistribution from joint time-lapse gravimetry and photogrammetry surveys. Earth Surface Dynamics, 8, 555–577, 2020.
Zhu, C, J Guo, J Gao, X Liu, C Hwang, A Yu, J Yuan, B Ji, B Guan. Marine gravity determined from multi-satellite-GM/ERM altimeter data over the South China Sea: SCSGA V1.0, Journal of Geodesy, 94 (5), 2020. https://doi.org/10.1007/s00190-020-01378-4
2019
Yang, Y, C Hwang*, WC Hung, T Fuhrmann, YA Chen, and SH Wei. Surface deformation from Sentinel-1A InSAR: relation to water usage in central Taiwan. Remote Sensing, 2019, 11, 2817; doi:10.3390/rs11232817.
Zhu, C., Guo, J., Hwang, C., Gao, J., Yuan, J., & Liu, X.. How HY-2A/GM altimeter performs in marine gravity derivation: assessment in the South China Sea. Geophysical Journal International, 219(2), 1056-1064, 2019.
Yang, YD, F Li, C Hwang*, MH Ding and J Ran. Space-time evolutions of ice and snow contributions to Greenland’s mass change from Envisat and GRACE data. Journal of Geophysical Research-Earth Surface. 2019. 10.1029/2018JF004765
Gautier, S., C. Tiberi, M. Lopez, O. Foix, S. Lallemand, T. Theunissen, C. Hwang, E. Chang. Detailed lithospheric structure of an arc-continent collision beneath Taiwan revealed by joint inversion of seismological and gravity data, Geophysical Journal International, Vol. 218, 586-600, 2019.
Wang, H, Y Chu, Z Huang, C Hwang, and NF Chao. Robust, Long-term Lake Level Change from Multiple Satellite Altimeters in Tibet: Observing the Rapid Rise of Ngangzi Co over a New Wetland, Remote Sensing, 11, 558, 2019, doi:10.3390/rs11050558
Hwang*, C., Y.-S. Cheng, W.-H. Yang, G. Zhang, Y.-R. Huang, W.-B. Shen, and Y. Pan. Lake level changes in the Tibetan Plateau from Cryosat-2, SARAL, ICESat, and Jason-2 altimeters. Terrestrial, Atmospheric and Oceanic Sciences, 30, 29-46, doi: 10.3319/TAO.2018.07.09.01, 2019.
Hwang*, C., W.-B. Shen, C. K. Shum, and X. Song: Introduction to the special issue on Tibet: Contemporary geodetic-geophysical observations and interpretations. Terrestrial, Atmospheric and Oceanic Sciences, 30, 1-5, doi: 10.3319/TAO.2019.01.22.01, 2019
2018
Chen, KH, C Hwang*, LC Chang and CC Ke. Short-time geodetic determination of aquifer storage coefficient in Taiwan. Journal of Geophysical Research-Solid Earth. 123, 2018. https://doi.org/10.1029/2018JB016630
洪偉嘉，陳怡安，黃金維，多元整合空間資訊技術於地層下陷監測與防治之應用，中國土水會刊第四十五卷第三期, 2018.
Hamid, AIA, AH Md Din, C Hwang, N F Khalid, A Tugi and KM Omar. Contemporary sea level rise rates around malaysia: altimeter data optimization for assessing coastal impact, Journal of Asian Earth Sciences, Vol. 166, pp. 247-259, 2018.
Lin, SF, and C Hwang*, Orbital resonances of Taiwan’s FORMOSAT-2 remote sensing satellite. Acta Astronautica, Vol. 147, pp. 71-85, 2018.
2017
Wang, D, C Hwang, and WB Shen. Investigations of anomalous gravity signals prior to 71 large earthquakes based on a 4-years long superconducting gravimeter records. Geodesy and Geodynamics, 8(5), 319-327, 2017.
Hung, WC, C Hwang*, YA Chen, L Zhang, KH Chen, SH Wei, DR Huang and SH Lin. Land subsidence in Chiayi, Taiwan, from compaction well, leveling and ALOS/PALSAR: aquaculture-induced relative sea level rise, Remote Sensing,10, 40; Decemeber 2017. doi:10.3390/rs10010040.
Tsai, JP, CC Cheng, Y Zha, LC Chang, C Hwang, YL Wang, and TC Yeh. Fusion of time-lapse gravity survey and hydraulic tomography for estimating spatial varying hydraulic conductivity and specific yield field, Water Resources Research,Vol. 53, No. 10, 8554-8571. 2017.
Kao, R, C Hwang*, JW Kim, KE Ching, F Masson, WC Hsieh, and N Le Moigne. Absolute gravity change in Taiwan: present result of geodynamic process investigation, TAO, 28, 855-875, 2017. doi: 10.3319/TAO.2017.06.13.01
Han, J, N Tangdamrongsub, C Hwang*, and HZ Abidin.Intensified water storage loss by biomass burning in Kalimantan: detection by GRACE, Journal of Geophysical Research-solid earth, Vol. 122, No. 3, pp. 2409-2430, 2017. DOI: 10.1002/2017JB014129
Chao, N, ZT Wang, C Hwang*, T Jin and YS Cheng. Decline of Geladandong glacier elevation in Yangtze River’s source region: detection by ICESat and assessment by hydroclimatic data, Remote Sensing. 9, 75, 2017. doi:10.3390/rs9010075 www.mdpi.com/journal/remotesensing
2016
Tseng, TP, C Hwang, CY Kuo, YC Cliu and WH Yeh. Geocenter motion estimated from GRACE orbits: the impact of F10.7 solar flux, Advance Space Research, V. 59, No. 11, 2819-2830, 2017. Doi: http://dx.doi.org/10.1016/j.asr.2016.02.003
Mouyen, M, BF Fong Chao, C Hwang, and WC Hsieh. Gravity monitoring of Tatun Volcanic Group activities and inference for underground fluid circulations, Journal of Volcanology and Geothermal Research, V. 328, pp. 45-58, 2016.
Hsiao, YH, C Hwang, ML Wu, and JC Chang. Improved geoid modeling using observed and modeled gravity gradients in Taiwan, Journal of Surveying Engineeing, 2016, 10.1061/(ASCE)SU.1943-5428.0000212 , 04016027.
Liu, YC, C Hwang*, J Han, R Kao, C-R Wu, H-C Shih and N Tangdamrongsub. Sediment-Mass Accumulation Rate and Variability in the East China Sea Detected by GRACE, Remote Sensing, 2016, 8, 777; doi:10.3390/rs8090777.
Chung, Y D, TK Yeh, G Xu, C S Chen, C Hwang, and H-C Shih. GPS height variations affected by ocean tidal loading along the coast of Taiwan, IEEE Sensors Journal, VOL. 16, NO. 10, pp. 3697-3704, MAY 15, 2016.
Guo, J, Z Dong, Z Tan, X Liu, C Chen and C Hwang. GNSS data using PPP technique, A crossover adjustment for improving sea surface height mapping from in-situ high rate ship-borne GNSS data using PPP technique, Continental Shelf Research, 125, pp. 54-60, 2016. http://dx.doi.org/10.1016/j.csr.2016.07.002.
Pan, Y, WB Shen, C Hwang, C Liao, T Zhang, G Zhang. Seasonal mass changes and crustal vertical deformations constrained by GPS and GRACE in northeastern Tibet, Sensors, 16(8), 2016, doi: doi: 10.3390/s16081211
Hwang*, C, Y Yang, R Kao, J Han, CK Shum, DL Galloway, M Sneed, WC Hung, YS Cheng and F Li. Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China, Scientific Reports, 6, 28160, 2016. doi: 10.1038/srep28160 (2016).
Hwang*, C, YS Cheng, JC Han, R Kao, CY Huang, SH Wei and H Wang. Multi-Decadal Monitoring of Lake Level Changes in the Qinghai-Tibet Plateau by the TOPEX/Poseidon-Family Altimeters: Climate Implication, Remote Sensing, 8, 446, 2016. doi:10.3390/rs8060446
Tangdamrongsuba, N and C Hwang*, Along-track geopotential difference and deflection of the vertical from GRACE range rate: use of computer program GEOGRACE, Oceanic and Atmospheric Sciences,Terrestrial, Atmospheric and Ocean. Sciences, Vol. 27, No. 1, 29-42, 2016.
Hsiao, YS, C Hwang*, YS Cheng, LC Chen, HJ Hsu, JH Tsai, CH Liu, CC Wang, YC Liu, and YC Kao, High-resolution depth and coastline over major atolls of South China Sea from satellite altimetry and imagery, Remote Sensing of Environment, Vol. 176, pp. 69-83, 2016.
2015
Pan, Y, WB Shen, H Ding, C Hwang, Jin Li, T Zhang, The quasi-biennial vertical oscillations at global GPS stations: identification by ensemble empirical mode decomposition, Sensors, 15(10), 26096-26114; doi:10.3390/s151026096, 2015.
Shih, HC, C Hwang*, JP Barriot, M Mouyen, P Correia, Corréia, D Lequeux, and L Sichoix, High-resolution gravity and geoid models in Tahiti obtained from new airborne and land gravity observations: data fusion by spectral combination, Vol. 67: 124, Earth, Planets and Space, 2015. DOI 10.1186/s40623-015-0297-9
Hwang, C, and WC Hung, Contemporary land subsidence in Ilan from leveling observations: correlation analysis of groundwater pumping and subsidence. Vol. 2, No. 2, pp. 99-122, Taiwan Journal of Geoinformatics (國土測繪與空間資訊), 2015. (in Chinese)
2014
Hwang*, C and ETY Chang, Seafloor secrets revealved, Science, Vol. 346, No. 6205, pp.32-33, 2014. DOI: 10.1126/science.1260459
Lien, TY, CC Cheng and C Hwang*, D Crossley, Assessing active faulting by hydro-geological modeling and superconducting gravimetry: a case study for Hsinchu Fault, Taiwan, Journal of Geophysical Research-solid Earth, Vol. 119, No. 9, pp. 7319-7335, 2014. doi:10.1002/2014JB011285.
Yang, Y, B Sun, Z Wang, M Ding, C Hwang, S Ai, L Wang, Y Du, D E, GPS-derived velocity and strain fields around Dome Argus, Journal of Glaciology, Vol. 60, No. 222, pp. 735-742, 2014. doi: 10.3189/2014JoG14J078
Yang,Y, C Hwang*, and D E, A fixed full-matrix method for determining ice sheet height change from satellite altimeter: an ENVISAT case study in East Antarctica with backscatter analysis, Journal of Geodesy, Vol. 88, pp. 901-914, 2014. DOI 10.1007/s00190-014-0730-z
Mouyen, M, M Simoes, F Mouthereau, F Masson, C Hwang, C-C Cheng, Investigating possible gravity change rates expected from long-term deep crustal processes in Taiwan, Geophysical Journal International, Vol. 198, pp. 187-197, 2014. doi: 10.1093/gji/ggu133
Hwang*, C, KH Chen and CC Chen, TY Lien, Gravity and groundwater changes in the Ilan pumping test of 2013: a preliminary estimation of water specific yield, Special issue of Central Geological Survey of Taiwan, No. 72, pp. 187-204, 2014 (in Chinese)
2013
Zhou, J, C Hwang, HP Sun, J Xu, W Zhang R Kao, and Tze-Chiang Cheng, Precise determination of ocean tide loading gravity effect for absolute gravity stations in coastal area of China: effects of land-sea boundary and station coordinate, Vol. 68, pp. 29-36, Journal of Geodynamics, 2013.
Hwang*, C and JF Huang, Numerical modeling of displacements due to ocean tide loading: case study at GPS stations in Taiwan and western Pacific, Vol. 36, No.8, pp. 1017-1028, Journal of Chinese Institute of Engineers, 2013. DOI:10.1080/02533839.2012.747045
Hwang*, C, K Heki, W Shen, and CK Shum. Preface to the Special Issue on Geophysical and Climate Change Studies in Tibet, Xinjiang, and Siberia (TibXS) from Satellite Geodesy, Terrestrial, Oceanic and Atmospheric Sciences, Vol. 24, No. 4, Part I, 2013.
Hwang*, C, HJ Hsu, and C Huang, A New Geoid Model of Taiwan：Applications to Hazard Mitigation, Environmental Monitoring and Height Modernization, Taiwan Journal of Geoinformatics, Vol. 1, No.1, pp. 57-81, 2013. (in Chinese)
Tenzer, T., M Bagherbandi, C Hwang and ETY Chang, The combined least-squares approach for modeling the Moho interface beneath Himalayas and Tibet using GOCO02S and DTM2006.0, Vol. 24, No. 4, Part I, pp. 581-590, Terrestrial, Oceanic and Atmospheric Sciences, 2013.
Guo, J, L Yang, X Liu, X Chang and C Hwang, Decadal variation of surface characteristics over Xinjiang, western China, from backscatter coefficients of T/P altimetry: evidence of climate change, Vol. 24, No. 4, Part I, pp. 565-579, Terrestrial, Oceanic and Atmospheric Sciences, 2013.
Mouyen, M, F. Masson, C Hwang, C.-C. Cheng, N. Le Moigne, C.W. Lee, R. Kao, W.-C. Hsieh, Erosion effects assessed by repeated gravity measurements in southern Taiwan, Vol. 192, pp. 113-136, Geophysical Journal International, 2013. doi:10.1093/gji/ggs019
Huang, C, C Hwang*, YS Hsiao, YM Wang, and DR Roman, Analysis of Alabama airborne gravity at three altitudes: expected accuracy and spatial resolution from a future Tibetan airborne gravity survey, Vol. 24, No. 4, Part I, pp. 551-563, Terrestrial, Oceanic and Atmospheric Sciences, 2013.
2012
Tangdamrongsub, N, C Hwang*, CK Shum, and L Wang, Regional surface mass anomalies from GRACE KBR measurements: application of L-curve regularization and a priori hydrological knowledge, VOL. 117, B11406, 18 pp, Journal of Geophysical Research-solid earth, 2012. doi:10.1029/2012JB009310
Hung, WC, C Hwang*, JC Liou, YS Lin, HL Yang, Modeling aquifer-system compaction and predicting land subsidence in central Taiwan, Engineering Geology, Vol. 147-148, pp. 78-90, 2012.
Masson, F, M Mouyen, C Hwang, Y.-M Wu, and F Ponton, Lithospheric structure of Taiwan from gravity modeling and sequential inversion of seismological and gravity data, Vol. 578, pp. 3-9, Tectonophysics, 2012.
Tseng, TP, C Hwang*, and SK Yang, Assessing attitude error of FORMOSAT-3/COSMIC satellites and its impact on orbit determination, Advance in Space Research, Vol. 49, pp. 1301-1312, 2012.
Chang, E.T.Y., B. F. Chao, C.C. Chiang, and C Hwang. Vertical plate motion in the vicinity of Taiwan Convergence, Tectonophysics, Vol. 578, pp. 98-106, 2012. DOI: 10.1016/j.tecto.2011.10.002.
Hwang*, C, HC Shih, YS Hsiao and CH Huang, Airborne gravity surveys over Taiwan Island and Strait, Kuroshio Current and South China Sea: comparison of GPS and gravity accuracies at different flight altitudes, Marine Geodesy, Vol. 35, No. 3, pp. 287-305, 2012. DOI:10.1080/01490419.2011.634962
Hwang*, C, and JF Huang, SGOTL: model and computer program for high-resolution, height-dependent gravity effect of ocean tide loading, Terrestrial, Atmospheric and Oceanic Sciences, Vol. 32, No. 2, 2012. Doi:10.3319/TAO.2011.10.06.02(Oc)
Lin, TJ, C Hwang*, TP Tseng and BF Chao, Low-degree gravity change from GPS data of COSMIC and GRACE satellite missions, Journal of Geodynamics, Vol. 53, pp. 34-42, 2012. Doi: 10.1016/j.jog.2011.08.004
2011
Hwang*, C, and JF Huang, SGOTL: model and computer program for high-resolution, height-dependent gravity effect of ocean tide loading, Terrestrial, Atmospheric and Oceanic Sciences, Vol. 32, No. 2, 2012. Doi:10.3319/TAO.2011.10.06.02(Oc)
Lin, TJ, C Hwang*, TP Tseng and BF Chao, Low-degree gravity change from GPS data of COSMIC and GRACE satellite missions, Journal of Geodynamics, Vol. 53, pp. 34-42, 2012. Doi: 10.1016/j.jog.2011.08.004
Yang, Y, C Hwang*, HJ Hsu, D E and H Wang, A sub-waveform threshold retracker for ERS-1 altimetry: a case study in the Antarctic Ocean, Computers & Geosciences, Vol. 54, No.1, pp. 113-118, 2011.
Yang, YD, DC E, HH Wang, DB Chao, C Hwang, F Li, and AS Tao, Sea ice concentration over the Antarctic Ocean from satellite pulse altimetry. Science China-Earth Sciences, Vol. 54, No.1, pp. 113-118, 2011. doi:10.1007/s11430-010-4108-7.
Tangdamrongsub, N, and C Hwang*, Water storage loss in central and south Asia from GRACE satellite gravity: correlations with climate data, Natural Hazards, Vol. 59, pp. 749-769, 2011. DOI10.1007/s11069-011-9793-9.
Yeh, TK, C Hwang, JF Huang, BF Chao, and MH Chang, Vertical displacement due to ocean tidal loading around Taiwan based on GPS observations, Atmospheric and Oceanic Sciences, Vol. 22, No. 4, pp. 373-382, 2011.
Lan, SC, TT Yu, C Hwang, and R Kao, Analysis of the Constraints in Using Superconducting Gravimeters for Far-Field Pre-seismic Anomaly Detection, Terrestrial, Atmospheric and Oceanic Sciences, Vol. 22, No.3, pp.271-282, 2011.
Shen, WB, D Wang and C Hwang, Anomalous signals prior to Wenchuan earthquake detected by superconducting gravimeters and broadband seismometers records, Journal of Earth Science, Vol. 22, No. 5, pp.640-651, 2011.
Hung, WC, C Hwang*, YA Chen, CP Chang, JY Yen, A Hooper, and CY Yang, surface deformation from persistent scatterers SAR Interferometry and fusion with leveling data: a case study over the Choushui River Alluvial Fan, Taiwan, Remote Sensing of Environment, Vol. 115, pp. 957-967, 2011.
Hwang*, C and YC Kao, A preliminary analysis of lake level and water storage changes over Lakes Baikal and Balkhash from satellite altimetry and gravimetry, Terrestrial, Atmospheric and Oceanic, Vol. 22, No. 2, pp. 97-108, 2011.
Hwang*, C, BF Chao, JF Freymueller, WB Shen and CK Shum, Preface to the special issue on geodynamic and climate-change processes over Tibet, Xinjiang and Siberia, Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol. 22, No. 2, p.1, 2011.
Hsiao, YS, JW Kim, KB Kim, BY Lee, and C Hwang, Bathymetry Estimation by Gravity-Geologic Method: Investigation of density contrast predicted by downward continuation, Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol. 22, No.3,pp. 347-358, 2011.
Hsiao, YS, and C Hwang*, Topography-Assisted Downward Continuation of Airborne Gravity: Application to Geoid Determination in Taiwan, Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol.21, No.4, pp. 627-637, 2011. doi: 10.3319/TAO.2009.07.09.01(T)
2010
Guo JY, YG Gao, C Hwang, and JL Sun, A multi-subwaveform parametric retracker of the radar satellite altimetric waveform and recovery of gravity anomalies over coastal oceans, SCIENCE CHINA-EARTH SCIENCES, Vol. 53, No. 4, pp. 610-616, 2010.
Guo, JY, XT Chang, C Hwang, JL Sun, and YB Han, Oceanic surface geostrophic velocities determined with satellite altimetric crossover method, Chinese Journal of Geophysics-Chinese Edition, 53(11), pp 2582-2589, 2010/11.
Guo, JY, YG Gao, XT Chang, and C Hwang, Optimal threshold algorithm of EnviSat waveform retracking over coastal sea, Chinese Journal of Geophysics-Chinese Edition, 53(4), pp 807-814, 2010/4.
Hwang*, C, TP Tseng and TJ Lin, D Švehla, Hugentobler, and BF Chao, Quality assessment of FORMOSAT-3/COSMIC and GRACE GPS observables: analysis of multipath, ionospheric delay and phase residual in orbit determination, GPS Solutions, Vol. 14, 121-131, 2010.
Hung, WC, C Hwang*, CP Chang, JY Yen, CH Liu, and WH Yang, Monitoring severe subsidence in Taiwan by multi-sensors: Yunlin, the southern Choushui River Alluvial Fan, Environmental Geology, Vol. 59, No. 7, pp. 1535-1548, 2010.
Hwang*, C, T.C. Cheng, C.C. Cheng, and W.C. Hung, Land subsidence using absolute and relative gravimetry: a case study in central Taiwan, Survey Review, Vol. 42, No.315, pp. 27-39, 2010.
2009
Mouyen, M, F Masson, C Hwang, CC Cheng, R Cattin, CW Lee, NL Moigne, J Hinderer, J Malavieille, R Bayer, and B luck, Expected temporal absolute gravity change across the Taiwanese Orogen, a modeling approach, Journal of Geodynamics, Vol. 48, No. 3-5, pp. 284-291, 2009.
Hwang*, C, TP Tseng, TL Lin, D Svehla, and B Schreiner, Precise orbit determination for FORMOSAT-3/COSMIC, Journal of Geodesy, Vol. 83, pp. 477-489, 2009. Doi: 10.1007/s00190-008-0256-3
Kim, KD, JW Kim, J Neumeyer, R Kao, C Hwang, HJ Park, I Woo, YW Lee, Determination of Gravity at MunGyung superconducting gravity at Observatory, Korea. Geosciences Journal Korea, Vol. 13, No.2, 141-150, 2009. DOI: 10.1007/s12303-009-0013-5
Hwang*, C, R Kao, CC Cheng, JF Huang, CW Lee , and T Sato, Results from parallel superconducting and absolute gravimetric observations and GPS at the Hsinchu (HS) station of GGP, Taiwan, Journal of Geophysical Research-solid earth, Vol. 114, B07406, 2009. Doi: 10.1029/2008JB006195
Guo, J, XT Chang, Y Gao, JL Sun, and C Hwang, Lake level variations monitored with satellite altimetry waveform retracking, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2(2), pp 80-86, 2009/6.
Yeh, TK, C Hwang, G Xu and CS Wang, Determination of GPS reciever clock errors: impact on positioning accuracy, Measurement Science and Technology,Vol. 20, pp. 1-7, 2009. Doi: 10.1088/0957-0233/20/7/075105
2008
Guo, JY, YB Han and C Hwang, Analysis on motion of Earth’s center of mass observed with CHAMP mission, SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY, Vol. 51, 1597-1606, 2008
Yeh, TK, C Hwang, and G Xu, GPS height and gravity variations due to ocean tidal loading around Taiwan. Surveys in Geophysics, Vol. 29, 37-50, 2008. doi: 10.1007/s10712-008-9041-3.
Hwang*, C, TJ Lin and TP Tseng, and BF Chao, Modeling orbit dynamics of FORMOSAT-3/COSMIC satellites for recovery of temporal gravity, IEEE Transactions on Geosciences and Remote Sensing, Vol. 46, No. 11, pp. 3412-3423, 2008.
Hwang, C, and HY Hsu, Shallow-water gravity anomalies from satellite altimetry: case studies in the East China Sea and Taiwan Strait, Journal of the Chinese Institute of Engineers, Vol. 31, No. 5, pp. 841-851, 2008.
Hwang, C, J Benveniste, Y Dang, and C. K. Shum, Preface to the Special Issue on satellite Altimetry over Land and Coastal Zones: Applications and Challenges, Terrestrial, Atmospheric and Oceanic Sciences, Vol. 19, No. 1-2, I, 2008. DOI:10.3319/TAO.2008.19.1-2.0(SA)
Hwang, C, WC Hung, and CH Liu, Results of geodetic and geotechnical monitoring of subsidence for Taiwan High Speed Rail operation, Natural Hazards, Vol. 47, pp. 1-16, 2008. DOI: 10.1007/s11069-007-9211-5
Deng, X, C. Hwang, R. Coleman and W.E. Featherstone, Seasonal and Interannual Variations of the Leeuwin Current off Western, Australia from TOPEX/POSEIDON Satellite Altimetry, Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol. 19, No.1-2, pp. 135-149. 2008. DOI:10.3319/TAO.2008.19.1-2.135(SA)
Kingdon, R., C Hwang, YS Hsiao, M Santos, Gravity anomalies from retracked ERS and Geosat altimetry over Great Lakes: accuracy assessment and problems, Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol. 19, No.1-2, pp. 93-101, 2008. DOI:10.3319/TAO.2008.19.1-2.93(SA)
Hwang, C, HC Shih, JY Guo, and YS Hsiao, Zonal and meridional ocean currents at TOPEX/Poseidon and JASON-1 crossovers around Taiwan: error analysis and limitation, Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol. 19, No.1-2, pp. 151-162, 2008. DOI:10.3319/TAO.2008.19.1-2.151(SA)
2007
Hwang, C., Y.S. Hsiao, H.C. Shih, M. Yang, K.H. Chen, R. Forsberg and A. V. Olesen, Geodetic and geophysical results from a Taiwan airborne gravity survey: Data reduction and accuracy assessment, Journal of Geophysical Research, 112, 2007. DOI:10.1029/2005JB004220
Hwang, C., Y.S. Hsiao, C.C Lu, W. S. Wu and Y. H. Tseng, Determination of Height of Northeast Asia’s Highest Peak (Mt. Jade) by direct leveling, Survey Review, 39 (303), pp. 21-33, 2007.
2006
Chang, XT JC Li , JY Guo, and C Hwang , A multi-leading edge and multi-threshold waveform retracker, Chinese Journal Of Geophysics-Chinese Edition 49 (6), pp. 1629-1634, 2006.
Guo, JY, C Hwang, XT Chang, and YT Liu, Improved threshold retracker for satellite altimeter waveform retracking over coastal sea, Progress in Natural Science, 16 (7), pp. 732-738, 2006.
Hwang, C., J. Guo, X. Deng, H.Y. Hsu and Y. Liu, Coastal gravity anomaly from retracked Geosat/GM altimetry: improvement, limitation and the role of airborne gravity data, Journal of Geodesy, 80 (4), 204-216, 2006. DOI10.1007/s00190-062-0052-x
Hwang, C., Y.S. Hsiao, and H.C. Shih, Data reduction for scalar airborne gravimetry: theory, computer package and a case study in Taiwan, Computers and Geosciences, 32 , pp. 1573-1584, 2006.
Hwang, C. and E.-C. Kao, Spherical harmonic analysis and synthesis: application to temporal gravity variation, Computers and Geosciences, 32 (4), 442-451, 2006.
2005
Chang, XT JC Li , JY Guo, and C Hwang , A multi-leading edge and multi-threshold waveform retracker, Chinese Journal Of Geophysics-Chinese Edition 49 (6), pp. 1629-1634, 2006.
Guo, JY, C Hwang, XT Chang, and YT Liu, Improved threshold retracker for satellite altimeter waveform retracking over coastal sea, Progress in Natural Science, 16 (7), pp. 732-738, 2006.
Hwang, C., J. Guo, X. Deng, H.Y. Hsu and Y. Liu, Coastal gravity anomaly from retracked Geosat/GM altimetry: improvement, limitation and the role of airborne gravity data, Journal of Geodesy, 80 (4), 204-216, 2006. DOI10.1007/s00190-062-0052-x
Hwang, C., Y.S. Hsiao, and H.C. Shih, Data reduction for scalar airborne gravimetry: theory, computer package and a case study in Taiwan, Computers and Geosciences, 32 , pp. 1573-1584, 2006.
Hwang, C. and E.-C. Kao, Spherical harmonic analysis and synthesis: application to temporal gravity variation, Computers and Geosciences, 32 (4), 442-451, 2006.
2004
Hwang, C., C-R. Wu, and R. Kao, TOPEX/POSEIDON observations of eddies in the Subtropical Counter Current area: kinematic characteristics of anticyclonic and cyclonic eddies, Journal of Geophysical Research, 109, C08013, doi:10.1029/2003JC002026, 2004.
Hwang, C., LH Lee, SB Yu, and HY Chen, Single and multi-epoch analyses of GPS baseline network: application to coordinate and velocity determinations in central Taiwan, Journal of Surveying Engineering, ASCE, 130 (2), pp. 86-94, 2004.
2003
Hwang, C, CG Wang and YS Hsiao, Terrain correction computation using Gaussian quadrature: effect of innermost zone, Computers and Geosciences, 29 (10), pp. 1259-1268, 2003.
Hwang, C, and Y.-S. Hsiao, Orthometric correction from leveling, gravity, density and elevation data: a case study in Taiwan, Journal of Geodesy, 77, pp. 279-291, 2003.
Deng, X., W. Featherstone, C. Hwang, and P. Berry, Waveform retracking of ERS-1, Marine Geodesy, Vol. 25, No. 4, pp. 189-204, 2003. (EI)
Hwang, C, YS Hsiao, and TL Lin, A digital elevation model of Taiwan and accuracy assessment, Cadastre Survey, 22 (2), pp.1-19, 2003. (in Chinese)
2002
Hwang, C., HY Hsu and RJ Jang, Global mean sea surface and marine gravity anomaly from multi-satellite altimetry: applications of deflection-geoid and inverse Vening Meinesz formulae, Journal of Geodesy, 76, pp. 407-418, 2002.
Hwang, C, CS Chen, JT Lee, CG Wang, LH Lee, YS Hsiao, CS Cheng and FS Ning, Gravity survey on first-order benchmarks, Cadastre Survey, 21(1), pp.1-27, 2002. (in Chinese) (EI)
Hwang, C and CG Wang, New gravity anomaly grid of Taiwan, Journal of Surveying Engineering, 44 (2), pp. 1-22, 2002. (in Chinese) (EI)
Hwang, C., C. G. Wang and L. H. Lee, Adjustment of relative gravity measurements using weighted and datum-free constraints, Computers and Geosciences, 28, pp. 1005-1015, 2002.
Hwang, C. and R. Kao, TOPEX/POSEIDON-derived space-time variations of Kuroshio Current: applications of a gravimetric geoid and wavelet analysis, Geophysical Journal International, 151, pp. 835-847, 2002.
Hwang, C., and L. S. Hwang, Satellite orbit error due to geopotential model error using perturbation theory: applications to ROCSAT-2 and COSMIC missions, Computers and Geosciences, 28, pp. 357-367, 2002.
Hwang C., and L. S. Hwang, Use of geoid for assessing trigonometric height accuracy and detecting vertical land motion, Journal of Surveying Engineering, ASCE, 128 (1), pp. 1-20, 2002.
2001
Hwang. C., Gravity recovery using COSMIC GPS data: application of orbital perturbation theory, Journal of Geodesy, 75, pp. 117-136, 2001.
Hwang, LS, and C Hwang, Orbit improvement for ROC-1 using Doppler data, Journal of Surveying Engineering , 43 (2), pp. 39-66, 2001. (in Chinese) (EI)
2000
Hwang, C and SA Chen, A tide model over the South China Sea from multi-satellite altimetry, Journal of the Chinese Institute of Civil and Hydraulic Engineering, 12 (2), pp. 381-389, 2000. (in Chinese) (EI)
Chao, B. F., E. C. Pavlis, C. Hwang, C. C. Liu, C. K. Shum, C. L. Tseng, and M, Yang, COSMIC: Improving earth’s gravity model and other geodetic application, Terr. Atm. and Ocean (TAO), 11 (1), pp. 365-378, 2000.
Hwang, C., and S. -A. Chen, Circulations and eddies over the South China Sea derived from TOPEX/POSEIDON altimetry, Journal of Geophysical Research, 105 (C10), pp. 23943-23965, 2000.
Hwang, C., and S. -A. Chen, Fourier and wavelet analyses of TOPEX/POSEIDON-derived sea level anomalies over the South China Sea: a contribution to SCSMEX, Journal of Geophysical Research, 105 (C12), pp. 28785-28804, 2000.
1999
Hwang, C., A bathymetric model for the South China Sea from altimetry and depth Data, Marine Geodesy, 22, pp. 37-51,1999. (EI)
1998
Hwang, C. and CY Kuo, CM Chu, and FS Ning, Gravity network adjustment and gravity data integration in Taiwan, Journal of Surveying Engineering, 40(3), pp. 71-82, 1998. (in Chinese) (EI)
Hwang, C., Inverse Vening Meinesz formula and deflection-geoid formula: applications to the predictions of gravity and geoid over the South China Sea, Journal of Geodesy, 72, 304-312, 1998.
Hwang, C., E. -C. Kao, and B. Parsons, Global derivation of marine gravity anomalies from Seasat, Geosat, ERS-1 and TOPEX/POSEIDON altimeter data, Geophysical Journal International, 34, pp. 449-460, 1998.
Hwang, C., and M. -J. Lin, Fast integration of low orbiter’s trajectory perturbed by earth’s nonsphericity, Journal of Geodesy, 72, pp. 578-585, 1998.
1997
Hwang, C., Height system of Taiwan from satellite and terrestrial data, Journal of Surveying Engineering, ASCE, 123 (4), pp. 126-180, 1997. (EI)
Hwang, C., and S. -K. Chen, Fully normalized spherical cap harmonics: application to the analysis of sea level data from TOPEX/POSEIDON and ERS-1, Geophysical Journal International, 129, pp. 450-460, 1997.
Hwang, C., and C. -Z. Chen, Improving M2 tide model over shallow waters using TOPEX/POSEIDON and ERS-1 altimetry, Marine Geodesy, 20(4), pp. 291-305, 1997. (EI)
Hwang, C., Analysis of some systematic errors affecting altimeter-derived sea surface gradient with application to geoid determination over Taiwan, Journal of Geodesy, 71, pp. 113-130, 1997.
1996
Hwang, C., and K-H Lee, Characteristics of GPS satellite orbit error and analysis of baseline repeatability, Journal of Surveying Engineering, 38(3), pp. 1-20, 1996. (in Chinese) (EI)
Hwang, C. and SC Tsai, Analysis of numerical solution of satellite equations of motion: case study for GPS and TOPEX/POSEIDON satellite orbits, Journal of Surveying Engineering, 38(4), pp. 31-47, 1996. (in Chinese) (EI)
Hwang, C., and B. Parsons, An optimal procedure for deriving marine gravity from multi-satellite altimetry, Geophysical Journal International, 125, pp. 705-718, 1996.
Hwang, C., A study of Kuroshio’s seasonal variabilities using an gravimetric-altimetric geoid and TOPEX/POSEIDON altimeter data, Journal of Geophysical Research, 101, pp. 6313-6335, 1996.
Hwang, C., A method for computing the coefficients in the product-sum formula of associated Legendre functions, Journal of Geodesy, 70, pp. 110-116, 1996.
1995
Hwang, C., and K-H Lee, Characteristics of GPS satellite orbit error and analysis of baseline repeatability, Journal of Surveying Engineering, 38(3), pp. 1-20, 1996. (in Chinese) (EI)
Hwang, C. and SC Tsai, Analysis of numerical solution of satellite equations of motion: case study for GPS and TOPEX/POSEIDON satellite orbits, Journal of Surveying Engineering, 38(4), pp. 31-47, 1996. (in Chinese) (EI)
Hwang, C., and B. Parsons, An optimal procedure for deriving marine gravity from multi-satellite altimetry, Geophysical Journal International, 125, pp. 705-718, 1996.
Hwang, C., A study of Kuroshio’s seasonal variabilities using an gravimetric-altimetric geoid and TOPEX/POSEIDON altimeter data, Journal of Geophysical Research, 101, pp. 6313-6335, 1996.
Hwang, C., A method for computing the coefficients in the product-sum formula of associated Legendre functions, Journal of Geodesy, 70, pp. 110-116, 1996.
1994
Hwang, C., B. Parsons, M. Strange, and A. Bingham, A detailed gravity field over the Reykjanes Ridge from Seasat, Geosat, ERS-1 and Topex/Poseidon altimeter data and ship data, Geophysical Research Letters, 21(25), pp. 2841-2844, 1994.
Chen, S.-A., and C Hwang, Sea level change around Taiwan from TOPEX/POSIDON altimetry, Journal of Surveying Engineering, 36(4), pp. 33-43, 1994. (in Chinese). (EI)
1993
Hwang, C., Spectral analysis using orthonormal functions with a case study on the sea surface topography, Geophysical Journal International, 115, pp. 1148-1160, 1993.
Hwang, C., Fast algorithm for the formation of normal equations in a least-squares spherical harmonic analysis by FFT, Manuscripta Geodaetica, 18, pp. 46-52, 1993.