Results 61 to 70 of about 757,045 (352)

Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert   +5 more
wiley   +1 more source

Recent developments in seismological geodesy

open access: yesGeodesy and Geodynamics, 2016
With the advanced development of the modern geodetic techniques, the geodetic observations have been proved to be more powerful to uncover the geophysical phenomena, especially the seismic one, than that in the past time.
Caijun Xu, Zheng Gong, Jieming Niu
doaj   +1 more source

Navigation satellites [PDF]

open access: yes, 1964
Satellite navigation system - geodesy ...
Kershner, R. B.
core   +1 more source

Analysis of GRACE range-rate residuals with focus on KBR instrument system noise [PDF]

open access: yes, 2018
We investigate the post-fit range-rate residuals after the gravity field parameter estimation from the inter-satellite ranging data of the gravity recovery and climate experiment (GRACE) satellite mission.
Devaraju, Balaji   +3 more
core   +3 more sources

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu   +7 more
wiley   +1 more source

Space-Time Reference with an Optical Link

open access: yes, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul   +3 more
core   +1 more source

Beachrock formation influenced by co‐seismic deformation and relative sea‐level changes during the Holocene near the Gulf of Saros, Türkiye (NE Aegean Sea)

open access: yesBoreas, EarlyView.
This is the first proof of beachrock found on the nearshore of the Gulf of Saros. Beachrock generation was influenced by tectonic activity, geomorphological processes, and sedimentation. The Late Holocene beachrock deposits were altered by co‐seismic deformation.
Ufuk Tari
wiley   +1 more source

Scientific Colloquium “Astronomical, Satellite and Terrestrial Methods in Geodesy” on Occasion of 80th Birthday of Professor Emeritus Nikola Solarić and Professor Miljenko Solarić

open access: yesKartografija i Geoinformacije, 2015
The scientific colloqium Astronomical, satellite and terrestrial methods in geodesy was organized on the occasion of 80th birthday of Professor Emeritus Nikola Solarić and Professor Miljenko Solarić (Fig.1) by members of the Chair for Satellite Geodesy ...
Željko Bačić   +3 more
doaj  

Spatial depth for data in metric spaces

open access: yesScandinavian Journal of Statistics, EarlyView.
Abstract We propose a novel measure of statistical depth, the metric spatial depth, for data residing in an arbitrary metric space. The measure assigns high (low) values for points located near (far away from) the bulk of the data distribution, allowing quantifying their centrality/outlyingness.
Joni Virta
wiley   +1 more source

Satellite geodesy: Results

open access: yesEos, Transactions American Geophysical Union, 1971
Since the last Quadrennial Report in 1967, progress in satellite geodesy has been confined to refining the results as of 1967 by adding data of greater accuracy and better distribution and to combining the various solutions. None of the avant‐garde methods, such as satellite, altimetry, very long base line interferometry (VLBI), drag‐free satellites ...
openaire   +1 more source

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