David Sandwell
David Sandwell  Email | Website
University of California, San Diego
Synergistic Sciences
Project
Participation in the SWOT Science Team: Marine Geophysics
Recent SWOT-related Publications | See All
Gravity Field Recovery from Geodetic Altimeter Missions (2019)
Global Bathymetry and Topography at 15 Arc Sec: SRTM15+ (2019)
Advances in Imaging Small-Scale Seafloor and Sub-Seafloor Tectonic Fabric Using Satellite Altimetry (2017)
Retracking of SARAL/AltiKa Radar Altimetry Waveforms for Optimal Gravity Field Recovery (2016)

Meeting Presentations (8)

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SWOT Cal/Val in the 15-1000 km band using Multibeam Bathymetry [presentation]
Sandwell, D. (29-Jun-17)
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High Resolution Mean Sea Surface for SWOT [presentation]
Sandwell, D., Schaeffer, P., Dibarboure, G., and Picot, N. (28-Jun-17)
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Sea Surface Height Slope Computation [presentation]
Gille, S., Dibarboure, G., and Sandwell, D. (26-Jun-17)
Poster
Improved Range Precision of AltiKa Altimetry after Two-Pass Retracking [poster]
Sandwell, D. and Zhang, S. (14-Jun-16)
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Marine Geophysics [presentation]
Sandwell, D. and Basset, D. (14-Jun-16)
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Mean Sea Surface (MSS) & Marine Gravity Questions [presentation]
Sandwell, D. (08-Jul-15)
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Improvements in Gravity and Bathymetry from Swath Altimetry [presentation]
Garcia, E. and Sandwell, D. (15-Jan-15)
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Global Bathymetry [presentation]
Sandwell, D. (02-Mar-10)

Publications (5)

Sandwell, D.T., Harper, H., Tozer, B. and Smith, W.H. (2019). Gravity Field Recovery from Geodetic Altimeter Missions, Adv. Space Res., doi: 10.1016/j.asr.2019.09.011.
Tozer, B., Sandwell, D.T., Smith, W.H.F., Olson, C., Beale, J.R., and Wessel, P. (2019). Global Bathymetry and Topography at 15 Arc Sec: SRTM15+, Earth Space Sci., 6, doi: 10.1029/ 2019EA000658.
Müller, R.D., Matthews, K.J., and Sandwell, D.T. (2017). Advances in Imaging Small-Scale Seafloor and Sub-Seafloor Tectonic Fabric Using Satellite Altimetry, Satellite Altimetry Over Oceans and Land Surfaces, Chap. 16, 670 pp., doi: 10.1201/9781315151779.
Zhang, S. and Sandwell, D.T. (2016). Retracking of SARAL/AltiKa Radar Altimetry Waveforms for Optimal Gravity Field Recovery, Marine Geodsy., 40(1), 40-56, doi: 10.1080/01490419.2016.1265032.
Zhang, S., Sandwell, D.T., Jin, T., and Li, D. (2016). Inversion of Marine Gravity Anomalies over Southeastern China Seas from Multi-satellite Altimeter Vertical Deflections, J. Appl. Geophys., 137, 128-137, doi: 10.1016/j.jappgeo.2016.12.014.

Documents (1)

Participation in the SWOT Science Team: Marine Geophysics
PI: David Sandwell (14-Jun-17). One of the secondary objectives of the SWOT mission is marine geophysics. The current accuracy of the ocean surface slope derived from traditional altimetry is about 2 microradians at 13 km wavelength, which is equivalent to 2 milligals of accuracy. SWOT, with its smaller footprint and additional cross-track slope measurement, could improve the gravity accuracy by perhaps an order of magnitude and also improve spatial resolution especially on the shallow continental margins.