Search Results - "Smith, F H"

New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure by Sandwell, David T., Müller, R. Dietmar, Smith, Walter H. F., Garcia, Emmanuel, Francis, Richard

“…Gravity models are powerful tools for mapping tectonic structures, especially in the deep ocean basins where the topography remains unmapped by ships or is…”
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Global marine gravity from retracked Geosat and ERS-1 altimetry: Ridge segmentation versus spreading rate by Sandwell, David T., Smith, Walter H. F.

“…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…”
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Toward 1-mGal accuracy in global marine gravity from CryoSat-2, Envisat, and Jason-1 by Sandwell, David, Garcia, Emmanuel, Soofi, Khalid, Wessel, Paul, Chandler, Michael, Smith, Walter H. F

“…More than 60% of the Earth's land and shallow marine areas are covered by > 2 km of sediments and sedimentary rocks, with the thickest accumulations on rifted…”
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Towards the Mitigation of Discrepancies in Sea Surface Parameters Estimated from Low- and High-Resolution Satellite Altimetry by Buchhaupt, Christopher K., Egido, Alejandro, Vandemark, Douglas, Smith, Walter H. F., Fenoglio, Luciana, Leuliette, Eric

“…In this study, we present an extension to existing numerical retrackers of synthetic-aperture radar (SAR) altimetry signals. To our knowledge at the time of…”
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Global Bathymetry and Topography at 15 Arc Sec: SRTM15 by Tozer, B., Sandwell, D. T., Smith, W. H. F., Olson, C., Beale, J. R., Wessel, P.

“…An updated global bathymetry and topography grid is presented using a spatial sampling interval of 15 arc sec. The bathymetry is produced using a combination…”
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Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings by Walter H. F. Smith, Sandwell, David T.

“…A digital bathymetric map of the oceans with a horizontal resolution of 1 to 12 kilometers was derived by combining available depth soundings with…”
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Global Bathymetry and Elevation Data at 30 Arc Seconds Resolution: SRTM30_PLUS by Becker, J. J., Sandwell, D. T., Smith, W. H. F., Braud, J., Binder, B., Depner, J., Fabre, D., Factor, J., Ingalls, S., Kim, S-H., Ladner, R., Marks, K., Nelson, S., Pharaoh, A., Trimmer, R., Von Rosenberg, J., Wallace, G., Weatherall, P.

“…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…”
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A study of cellular counting to determine minimum thresholds for adequacy for liquid-based cervical cytology using a survey and counting protocol by Kitchener, Henry C, Gittins, Matthew, Desai, Mina, Smith, John H F, Cook, Gary, Roberts, Chris, Turnbull, Lesley

“…Liquid-based cytology (LBC) for cervical screening would benefit from laboratory practice guidelines that define specimen adequacy for reporting of slides. The…”
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Arctic Sea-Ice Surface Elevation Distribution from NASA’s Operation IceBridge ATM Data by Yi, Donghui, Egido, Alejandro, Smith, Walter H. F., Connor, Laurence, Buchhaupt, Christopher, Zhang, Dexin

“…In this paper, we characterize the sea-ice elevation distribution by using NASA’s Operation IceBridge (OIB) Airborne Topographic Mapper (ATM) L1B data over the…”
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Improved Bathymetric Prediction Using Geological Information: SYNBATH by Sandwell, David T., Goff, John A., Gevorgian, Julie, Harper, Hugh, Kim, Seung‐Sep, Yu, Yao, Tozer, Brook, Wessel, Paul, Smith, Walter H. F.

“…To date, ∼20% of the ocean floor has been surveyed by ships at a spatial resolution of 400 m or better. The remaining 80% has depth predicted from satellite…”
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Mesoscale ocean dynamics observed by satellite altimeters in non-repeat orbits by Smith, Walter H. F., Scharroo, Remko

“…We compare sea surface height anomalies observed by satellite altimeters in exact repeat mission orbits to anomalies observed by altimeters in geodetic or…”
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A global positioning system-based climatology for the total electron content in the ionosphere by Scharroo, Remko, Smith, Walter H. F.

“…The total electron content (TEC) in the ionosphere is an important factor in the propagation of radio waves. Since 1998 the coverage global positioning system…”
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The Benefits of the Ka-Band as Evidenced from the SARAL/AltiKa Altimetric Mission: Scientific Applications by Verron, Jacques, Bonnefond, Pascal, Aouf, Lofti, Birol, Florence, Bhowmick, Suchandra, Calmant, Stéphane, Conchy, Taina, Crétaux, Jean-François, Dibarboure, Gérald, Dubey, A., Faugère, Yannice, Guerreiro, Kevin, Gupta, P., Hamon, Mathieu, Jebri, Fatma, Kumar, Raj, Morrow, Rosemary, Pascual, Ananda, Pujol, Marie-Isabelle, Rémy, Elisabeth, Rémy, Frédérique, Smith, Walter, Tournadre, Jean, Vergara, Oscar

“…The India-France SARAL/AltiKa mission is the first Ka-band altimetric mission dedicated primarily to oceanography. The mission objectives were firstly the…”
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Waveform Aliasing in Satellite Radar Altimetry by Smith, Walter H. F., Scharroo, Remko

“…The full deramp pulse compression scheme employed by satellite radar altimeters digitizes each radar echo at a sampling rate matched to the chirp bandwidth…”
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Marine gravity anomaly from Geosat and ERS 1 satellite altimetry by Sandwell, David T., Smith, Walter H. F.

“…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…”
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How supercontinents and superoceans affect seafloor roughness by Müller, R. Dietmar, Whittaker, Joanne M, Roest, Walter R, Wessel, Paul, Smith, Walter H. F

“…Seafloor roughness varies considerably across the world's ocean basins and is fundamental to controlling the circulation and mixing of heat in the ocean and…”
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Some remarks on resolving seamounts in satellite gravity by Marks, K. M., Smith, W. H. F.

“…We examine peak‐to‐trough gravity anomaly amplitudes over seamounts, comparing gravity derived from satellite altimetry with gravity measured by ships. We also…”
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Global gravity, bathymetry, and the distribution of submarine volcanism through space and time by Watts, A. B., Sandwell, D. T., Smith, W. H. F., Wessel, P.

“…The seafloor is characterized by numerous seamounts and oceanic islands which are mainly volcanic in origin. Relatively few of these features (<∼0.1%),…”
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Calibration of the CryoSat-2 Interferometer and Measurement of Across-Track Ocean Slope by Galin, N., Wingham, D. J., Cullen, R., Fornari, M., Smith, W. H. F., Abdalla, S.

“…This paper describes the calibration of the CryoSat-2 interferometer, whose principal purpose is to accurately measure the height of the Antarctic and…”
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Makers of the early Aurignacian of Europe by Churchill, S E, Smith, F H

“…Despite intensive study and a number of remarkable discoveries in the last two decades of the 20th century, our understanding of the cultural and biological…”
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