Results 141 to 150 of about 465 (179)

Observed Multi‐Decadal Acceleration of Globally Averaged Abyssal Ocean Warming

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Given sparse historical data in the deep and abyssal ocean, previously only multi‐decadal temperature trends have been estimated from observations there on a global scale. Full‐depth CTD sampling started circa 1970, with the first decadal global ship‐based survey occupied in the 1990s, and the first regional pilot array of Deep Argo floats ...
Gregory C. Johnson
wiley   +1 more source

Marine Heatwave Imprints on Salinity in the Northwest Atlantic

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Marine heatwaves (MHWs) are increasing in frequency and intensity in global boundary current systems such as the Gulf Stream (GS), where ocean circulation regulates upper‐ocean heat and water‐mass properties. We examine temperature–salinity co‐evolution during MHWs in the Northwest (NW) Atlantic using satellite observations and ocean ...
Natalie Stamper, Ganesh Gopalakrishnan, Bulusu Subrahmanyam   +2 more
wiley   +1 more source

Satellite–Derived Bathymetry in Shallow Waters: Evaluation of Gokturk-1 Satellite and a Novel Approach

Remote Sensing, 2023
For more than 50 years, marine and remote sensing researchers have investigated the methods of bathymetry extraction by means of active (altimetry) and passive (optics) satellite sensors. These methods, in general, are referred to as satellite-derived bathymetry (SDB).
Uğur Alganci, Emre Gülher
exaly   +4 more sources

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Satellite-derived bathymetry in practice

Hydrographische Nachrichten, 2020
Multibeam bathymetry surveying is a well-established method but limited to water depths accessible by vessels or small boats. Airborne LiDAR bathymetry (ALB) systems can cover this gap by surveying both the coastal topography and the shallower water regions.
Niederjasper, Marina, Lehmann, Frank
openaire   +1 more source

Satellite derived photogrammetric bathymetry

ISPRS Journal of Photogrammetry and Remote Sensing, 2018
Abstract Satellite Derived Bathymetry (SDB) is being adopted as a cheaper and more spatially extensive method for bathymetric mapping than traditional acoustic surveys, with research being conducted by the Canadian Hydrographic Service under a Government Related Initiatives Program (GRIP) of the Canadian Space Agency.
Matúš Hodúl, Stephen Bird, Anders Knudby, René Chénier   +3 more
openaire   +1 more source

Satellite-derived bathymetry

Hydrographische Nachrichten, 2022
In dieser Arbeit konnte gezeigt werden, dass auf Grundlage der satellitengestützten Bathymetrie (SDB) eine anlassbezogene Seevermessung, bei der Gebiete je nach Dynamik unterschiedlich intensiv vermessen werden, prinzipiell möglich ist. Die Grundlage für die SDB bilden Sentinel-2-Daten und daraus abgeleitete Bandkombinationen.
openaire   +2 more sources

Likelihood Ratio Statistic for Inferring the Uncertainty of Satellite Derived Bathymetry

2021 11th Workshop on Hyperspectral Imaging and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2021
We consider the study of performing likelihood-based inference in Lee's radiative transfer semi-analytical model. This model is widely used for the inversion of bathymetric products in coastal areas. We perform assessment of uncertainty on retrieved bathymetry in terms of hypothesis testing.
Guillaume Sicot, Mohamed Ali Ghannami, Marc Lennon, Nicolas Thomas, Loyer Sophie   +4 more
openaire   +1 more source

Satellite derived Bathymetry and Digital Elevation Models (DEM)

International Petroleum Technology Conference, 2014
Abstract In 2010, Qatar Shell Upstream International B.V. (QSUI) re-entered Exploration in Qatar focusing on the relatively deep conventional Pre-Khuff gas plays with a view to discover additional hydrocarbons in the State of Qatar.
J. Siermann, C. Harvey, G. Morgan, T. Heege   +3 more
openaire   +1 more source

Consideration of Level of Confidence within Multi-Approach Satellite-Derived Bathymetry [PDF]

ISPRS International Journal of Geo-Information, 2019
The Canadian Hydrographic Service (CHS) publishes nautical charts covering all Canadian waters. Through projects with the Canadian Space Agency, CHS has been investigating remote sensing techniques to support hydrographic applications. One challenge CHS has encountered relates to quantifying its confidence in remote sensing products.
Mesha Sagram
exaly   +3 more sources

Satellite-Derived Bathymetry Using Deep Convolutional Neural Network

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
Our goal is to develop technique for assessing bathymetry maps, which show the topography of the floors of water-bodies, using satellite or aerial imagery. The advent of deep neural networks has enabled the use of new techniques in analysing and creating depth maps from high resolution satellite images.
Bibin Wilson, Nikhil Cherian Kurian, Anand Singh, Amit Sethi   +3 more
openaire   +1 more source