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Inversion and Validation of Improved Marine Gravity Field Recovery in South China Sea by Incorporating HY-2A Altimeter Waveform Data. REMOTE SENSING 2020. [DOI: 10.3390/rs12050802] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
HaiYang-2A (HY-2A, where ‘Haiyang’ means ‘Ocean’ in Chinese) has provided reliable sea surface height observations for gravity with uniform ocean data coverage on a global scale for more than 8 years, particularly with denser across track sampling during the geodetic mission since March 2016. This paper aims at modeling and evaluating the regional marine gravity field at 1′×1′ resolution by incorporating HY-2A altimeter waveform data from 7 complete 168-day cycles in the geodetic mission phase. Initial evaluation indicates that, firstly, the measurements in the geodetic mission stay at a consistent accuracy level with observations at the start-of-life stage according to statistics of discrepancies at crossover points cycle by cycle. Secondly, range precision improvement can be achieved using a two-pass weighted least-squares retracker. Thirdly, a downsampling procedure combined with a low-pass filter is designed for HY-2A 20 Hz data to obtain 5 Hz measurements with enhanced precision. We calculate the 1′×1′ marine gravity field model over the South China Sea area by using the EGM2008 model as a reference field with the remove/restore method. The verifications with published models and shipborne gravimetric data show that HY-2A GM data is capable of improving marine gravity field modeling. Results show slightly higher accuracy than other models with similar input datasets but not including HY-2A. The accuracy is also compared with the latest DTU17 and SIO V27.1 model.
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Lawver LA, Gahagan LM, Coffin MF. The Development of Paleoseaways Around Antarctica. THE ANTARCTIC PALEOENVIRONMENT: A PERSPECTIVE ON GLOBAL CHANGE: PART ONE 2013. [DOI: 10.1029/ar056p0007] [Citation(s) in RCA: 250] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Royer JY, Sandwell DT. Evolution of the eastern Indian Ocean since the Late Cretaceous: Constraints from Geosat altimetry. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb094ib10p13755] [Citation(s) in RCA: 234] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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de Sá NC, Ussami N, Molina EC. Gravity map of Brazil: 1. Representation of free-air and Bouguer Anomalies. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/92jb00979] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yale MM, Sandwell DT, Smith WHF. Comparison of along-track resolution of stacked Geosat, ERS 1, and TOPEX satellite altimeters. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/95jb01308] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Goff JA. Global prediction of abyssal hill root-mean-square heights from small-scale altimetric gravity variability. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010jb007867] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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DiVenere VJ, Kent DV, Dalziel IWD. Mid-Cretaceous paleomagnetic results from Marie Byrd Land, West Antarctica: A test of post-100 Ma relative motion between East and West Antarctica. ACTA ACUST UNITED AC 1994. [DOI: 10.1029/94jb00807] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wessel P. Observational constraints on models of the Hawaiian Hot Spot Swell. ACTA ACUST UNITED AC 1993. [DOI: 10.1029/93jb01230] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Grunow AM, Kent DV, Dalziel IWD. New paleomagnetic data from Thurston Island: Implications for the tectonics of west Antarctica and Weddell Sea opening. ACTA ACUST UNITED AC 1991. [DOI: 10.1029/91jb01507] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mayes CL, Lawver LA, Sandwell DT. Tectonic history and new isochron chart of the south Pacific. ACTA ACUST UNITED AC 1990. [DOI: 10.1029/jb095ib06p08543] [Citation(s) in RCA: 155] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wakker KF, Zandbergen RCA, Naeije MC, Ambrosius BAC. Geosat altimeter data analysis for the oceans around South Africa. ACTA ACUST UNITED AC 1990. [DOI: 10.1029/jc095ic03p02991] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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McAdoo DC. Gravity field of the southeast central Pacific from Geosat Exact Repeat Mission Data. ACTA ACUST UNITED AC 1990. [DOI: 10.1029/jc095ic03p03041] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sandwell DT, McAdoo DC. High-accuracy, high-resolution gravity profiles from 2 years of the Geosat Exact Repeat Mission. ACTA ACUST UNITED AC 1990. [DOI: 10.1029/jc095ic03p03049] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bell RE, Brozena JM, Haxby WF, LaBrecque JL. Continental margins of the western Weddell Sea: Insights from airborne gravity and geosat-derived gravity. CONTRIBUTIONS TO ANTARCTIC RESEARCH I 1990. [DOI: 10.1029/ar050p0091] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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McAdoo DC, Sandwell DT. On the source of cross-grain lineations in the central Pacific gravity field. ACTA ACUST UNITED AC 1989. [DOI: 10.1029/jb094ib07p09341] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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