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