Results 101 to 110 of about 8,136,705 (229)

Baltic sea ice thickness estimation based on X-band SAR data and background information

Annals of Glaciology
In this study an operational sea ice thickness (SIT) estimation algorithm, based on HH-polarized X-band synthetic aperture radar (SAR) data, background information from the most recent, typically from the previous day, available daily Baltic Sea ice ...
Juha Antero Karvonen, Bin Cheng
doaj   +1 more source

Bridging Artificial Intelligence and Data Assimilation: The Data‐Driven Ensemble Weather Forecasting System ClimaX‐LETKF

Atmospheric Science Letters, Volume 27, Issue 10, October 2026.
We developed ClimaX‐LETKF, a weather forecasting system that combines the foundation machine learning‐based weather prediction model ClimaX with a conventional data assimilation system. The system achieves stable multiyear data assimilation cycling using NCEP upper‐air global observations.
Akira Takeshima, Kenta Shiraishi, Atsushi Okazaki, Tadashi Tsuyuki, Shunji Kotsuki   +4 more
wiley   +1 more source

X-SAR: The X-band synthetic aperture radar on board the Space Shuttle [PDF]

, 1993
The X-band synthetic aperture radar (X-SAR) is the German/Italian contribution to the NASA/JPL Shuttle Radar Lab missions as part of the preparation for the Earth Observation System (EOS) program. The Shuttle Radar Lab is a combination of several radars:
Werner, Marian U.
core  

Estimation of Significant Wave Height Using Wave-Radar Images

Journal of Marine Science and Engineering
Characteristics of random ocean waves have been measured by different devices, and X-band marine radar is one of the typical devices. This study proposes an enhanced methodology for estimating the significant wave height of ocean waves through the ...
Jae-Hoon Lee, Yoon-Seo Nam, Jaehak Lee, Yuming Liu, Yonghwan Kim   +4 more
doaj   +1 more source

A Comparison between Drifter and X-Band Wave Radar for Sea Surface Current Estimation

Remote Sensing, 2016
This paper deals with exploitation of the wave radar system for sea surface current estimation in a coastal zone. In particular, we present the results of the processing of the radar data collected by an X-band marine radar installed in Capo Granitola ...
Giovanni Ludeno, Carmelo Nasello, Francesco Raffa, Giuseppe Ciraolo, Francesco Soldovieri, Francesco Serafino   +5 more
doaj   +1 more source

Geomorphic Imprints of Coseismic Uplift: Knickpoints and Landslides on the Noto Peninsula, Japan

Earth Surface Processes and Landforms, Volume 51, Issue 10, October 2026.
River knickpoints and slow‐moving landslides show complementary spatial relationships with the vertical and horizontal deformation fields of the 2024 Mw 7.5 Noto Peninsula earthquake. Together, their distributions provide geomorphic information for evaluating cumulative landscape adjustment to repeated coseismic uplift at a regional scale.
Haruka Tsunetaka, Wataru Murakami
wiley   +1 more source

Mapping the bathymetry of the Dee Estuary using wave inversions of marine radar image sequences [PDF]

, 2008
The bathymetry of the Dee Estuary in Liverpool Bay has been mapped using a non-linear wave inversion of marine X-band radar data. Comparisons are made with survey data produced using a combination of multibeam sonar, airborne LIDAR and Admiralty charts ...
Bell, Paul
core  

In-Flight Performance Monitoring of TerraSAR-X Active Phased Array Antenna [PDF]

, 2009
TerraSAR-X is a high resolution synthetic aperture radar (SAR) satellite launched in 2007. Its active phased array X-Band antenna hosts 384 transmit/receive modules (TRMs) controlling the beam shape and steering in azimuth and elevation.
Markus Bachmann, Benjamin Brautigam, Bachmann, Markus, Schwerdt, Marco, Bräutigam, Benjamin, Marco Schwerdt   +5 more
core   +1 more source

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 725-752, October/December 2026.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

A Feasibility Study of Nearshore Bathymetry Estimation via Short-Range K-Band MIMO Radar

Remote Sensing
This paper provides an assessment of a 24 GHz multiple-input multiple-output radar as a remote sensing tool to retrieve bathymetric maps in coastal areas.
Giovanni Ludeno, Matteo Antuono, Francesco Soldovieri, Gianluca Gennarelli   +3 more
doaj   +1 more source