Results 61 to 70 of about 1,580,763 (277)

GRDL: A New Global Reservoir Area‐Storage‐Depth Data Set Derived Through Deep Learning‐Based Bathymetry Reconstruction

Water Resources Research
Reservoirs play a critical role in the global water cycle by regulating the flow of water from the environment into human systems. Accurate estimation of the area‐storage‐depth relationships for global reservoirs is essential for effective hydrological ...
Zhen Hao, Fang Chen, Xiaofeng Jia, Xiaobin Cai, Chao Yang, Yun Du, Feng Ling   +6 more
doaj   +1 more source

Holocene vegetation dynamics of Grande Terre (Kerguelen Islands) inferred from sedimentary ancient DNA

Journal of Quaternary Science, EarlyView.
ABSTRACT While the Antarctic region has experienced significant climatic changes over the Holocene, few high‐resolution records have examined their effects on the local biota. In order to understand past ecological shifts and forecast future changes, it is important to obtain high‐resolution palaeoecological records from this region.
Xaali O'Reilly‐Berkeley, Aloïs Revéret, Youri Lammers, Maaike Zwier, Anne E. Bjune, Fabien Arnaud, Jostein Bakke, Sandra Nogué, Inger G. Alsos   +8 more
wiley   +1 more source

Estimating Changes in Near-Shore Bathymetry with Subaerial Surveys [PDF]

Journal of Atmospheric and Oceanic Technology, 2013
Abstract Surveys of the subaerial beach (e.g., landward of approximately the MSL depth contour) are widely used to evaluate temporal changes in sand levels over large alongshore reaches. Here, seasonal beach face volume changes based on full bathymetry beach profiles (to ~8 m in depth) are compared with estimates based on the subaerial ...
Doria, A, Guza, R. T
openaire   +3 more sources

Responses of primary producers, anoxia, and chemical feedback to Late Glacial climate change: Insights from a paired lake approach

Journal of Quaternary Science, EarlyView.
Abstract Worldwide, lacustrine ecosystems are threatened by eutrophication and deoxygenation. Both processes are driven by the combined effects of human activities and climate change. Understanding the pre‐anthropogenic nexus between warming, eutrophication, deoxygenation, and related feedback is essential to determine how lakes respond to rapid ...
Noé R.M.M. Schmidhauser, Stan J. Schouten, Petra Zahajská, Andrea Lami, Jacqueline F.N. van Leeuwen, Rik Tjallingii, Hendrik Vogel, Martin Grosjean   +7 more
wiley   +1 more source

A Robust Algorithm for Photon Denoising and Bathymetric Estimation Based on ICESat-2 Data

Remote Sensing, 2023
The Ice, Cloud, and Land Elevation Satellite 2 (ICESat-2) is equipped with an Advanced Terrain Laser Altimeter System (ATLAS) with the capability of penetrating water bodies, making it a widely utilized tool for the bathymetry of various aquatic ...
Junsheng Zhong, Xiuguo Liu, Xiang Shen, Liming Jiang   +3 more
doaj   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

Interferometric synthetic aperture sonar large scale simulated data benchmark of a ship wreck

Electronics Letters, 2023
Interferometric synthetic aperture sonar (InSAS) systems produce high resolution seafloor imagery and 3‐D bathymetry by exploiting the phase differences between image pairs formed from data collected by vertically separated arrays.
Benjamin W. Thomas, Alan J. Hunter
doaj   +1 more source

A novel approach to estimate non‐algal particle absorption for improved retrieval of pigment concentrations in coastal waters

Limnology and Oceanography: Methods, EarlyView.
Abstract Phytoplankton play a central role in ocean biogeochemistry and understanding their composition and variability is critical for monitoring marine ecosystem dynamics. Continuous spectrophotometric measurements (using a Seabird Sci. AC‐S) along ship tracks enable high‐resolution measurements of particle spectral absorption (apλ$$ {a}_p\left ...
Margherita Costanzo, Vittorio E. Brando, Emmanuel Boss, Alison Chase, David Doxaran   +4 more
wiley   +1 more source

Iterative Least-Squares Collocation Bathymetry Inversion With Optimized Gravity Covariance

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Bathymetry inversion using least-squares collocation (LSC) from satellite altimetry gravity data often relies on empirical covariance parameters or prior topography information, which is physically inconsistent with actual inversion conditions.
Diao Fan, Shanshan Li, Xianyong Pei, Jinkai Feng, Jinhui Zhang, Shuqiang Xue   +5 more
doaj   +1 more source

Bathymetry estimation from satellite geodetic missions using gravity geologic method [PDF]

, 2018
Bathymetry information is essential in understanding the physics of the Earth and the ocean process. However, the bathymetry data are difficult to obtain at the restricted, complex and vast area. The conventional bathymetry surveys which used single beam
Tugi, Astina
core