Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings
- Walter H. F. Smith, D. Sandwell
- Geology
- 26 September 1997
A digital bathymetric map of the oceans with a horizontal resolution of 1 to 12 kilometers was derived by combining available depth soundings with high-resolution marine gravity information from the…
Marine gravity anomaly from Geosat and ERS 1 satellite altimetry
- D. Sandwell, Walter H. F. Smith
- Geology
- 10 May 1997
Closely spaced satellite altimeter profiles collected during the Geosat Geodetic Mission (-6 km) and the ERS 1 Geodetic Phase (8 km) are easily converted to grids of vertical gravity gradient and…
New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure
- D. Sandwell, R. Müller, Walter H. F. Smith, E. Garcia, R. Francis
- Geology, Environmental ScienceScience
- 3 October 2014
An extinct spreading ridge in the Gulf of Mexico, a major propagating rift in the South Atlantic Ocean, abyssal hill fabric on slow-spreading ridges, and thousands of previously uncharted seamounts are found.
Global Bathymetry and Elevation Data at 30 Arc Seconds Resolution: SRTM30_PLUS
- J. Becker, D. Sandwell, P. Weatherall
- Environmental Science
- 4 November 2009
A new 30-arc second resolution global topography/bathymetry grid (SRTM30_PLUS) has been developed from a wide variety of data sources. Land and ice topography comes from the SRTM30 and ICESat…
Global marine gravity from retracked Geosat and ERS‐1 altimetry: Ridge segmentation versus spreading rate
- D. Sandwell, W. Smith
- Geology
- 1 January 2009
Three approaches are used to reduce the error in the satellite‐derived marine gravity anomalies. First, we have retracked the raw waveforms from the ERS‐1 and Geosat/GM missions resulting in…
BIHARMONIC SPLINE INTERPOLATION OF GEOS-3 AND SEASAT ALTIMETER DATA
- D. Sandwell
- Geology
- 1 February 1987
Green functions of the biharmonic operator, in one and two dimensions, are used for minimum curvature interpolation of irregularly spaced data points. The interpolating curve (or surface) is a linear…
Global seafloor topography from dense satellite altimetry and sparse ship soundings
- D. Sandwell, W. H. Smith
- Environmental Science, Geology
- 1997
We are constructing a complete bathymetric map of the oceans at a 3-10 km resolution by combining all of the available depth soundings collected over the past 30 years with high resolution marine…
Three-dimensional deformation caused by the Bam, Iran, earthquake and the origin of shallow slip deficit
- Y. Fialko, D. Sandwell, M. Simons, P. Rosen
- GeologyNature
- 19 May 2005
The InSAR-derived surface displacement data from the Bam and other large shallow earthquakes suggest that the uppermost section of the seismogenic crust around young and developing faults may undergo a distributed failure in the interseismic period, thereby accumulating little elastic strain.
Bathymetric prediction from dense satellite altimetry and sparse shipboard bathymetry
- Walter H. F. Smith, D. Sandwell
- Geology
- 10 November 1994
The southern oceans (south of 30°S) are densely covered with satellite-derived gravity data (track spacing 2–4 km) and sparsely covered with shipboard depth soundings (hundreds of kilometers between…
Line‐of‐sight displacement from ALOS‐2 interferometry: Mw 7.8 Gorkha Earthquake and Mw 7.3 aftershock
- E. Lindsey, R. Natsuaki, D. Sandwell
- Environmental Science, Geology
- 28 August 2015
Interferometric synthetic aperture radar (InSAR) is a key tool for the analysis of displacement and stress changes caused by large crustal earthquakes, particularly in remote areas. A challenge for…
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