Results 51 to 60 of about 85,904 (293)

Bathymetric Data Requirements for Operational Coastal Erosion Forecasting Using XBeach

Journal of Marine Science and Engineering, 2021
There is an increasing interest in the broad-scale implementation of coastal erosion early warning systems (EWS) with the goal of enhancing community preparedness to extreme coastal storm wave events.
Nashwan Matheen, Mitchell D. Harley, Ian L. Turner, Kristen D. Splinter, Joshua A. Simmons, Mandi C. Thran   +5 more
doaj   +1 more source

Observations of River Topography and Flow Around Bridges [PDF]

, 2009
This investigation was motivated by the amount of river, estuarine, and coastal infrastructure that is susceptible to extreme wave and flooding events. The high velocities and resulting shear stresses associated with high flow velocities are capable of ...
Lippmann, Thomas C.
core   +1 more source

Early deglaciation history of the southeastern Baffin Island shelf (Eastern Canadian Arctic Archipelago)

Journal of Quaternary Science, EarlyView.
ABSTRACT During the last glacial period, the Laurentide Ice Sheet (LIS) was the largest terrestrial ice sheet on Earth. Its evolution since the Last Glacial Maximum profoundly influenced Earth's geodynamics and surface processes. Investigating the past dynamics of the LIS provides critical insights into how contemporary ice sheets may respond to ...
Alexis P. Belko, Alexandre Normandeau, Patrick Lajeunesse, Audrey Limoges   +3 more
wiley   +1 more source

High-accuracy shallow-water bathymetric method including reliability evaluation based on Sentinel-2 time-series images and ICESat-2 data

Frontiers in Marine Science
Shallow-water bathymetric maps provide vital geographic information for various coastal and marine applications such as environmental management, engineering construction, oil and gas resource exploration, and ocean fisheries. Recently, satellite-derived
Yuan Le, Xiaoyu Sun, Yifu Chen, Yifu Chen, Dongfang Zhang, Lin Wu, Lin Wu, Hai Liu, Mengzhi Hu   +8 more
doaj   +1 more source

Reconnaissance surveying of Bechevin Bay, AK using satellite-derived bathymetry [PDF]

, 2015
Recently, a remote sensing study has been conducted over Bechevin Bay Channel, Alaska as part of a collaboration project between NOAA and the U.S. Coast Guard (USCG).
Gonsalves, Michael, Keown, Patrick, Nyberg, John, Pe\u27eri, Shachak, Snyder, Leland P.   +4 more
core   +1 more source

Seabed classification in the Gulf of Alaska from acoustic surveys using deep learning

Limnology and Oceanography: Methods, EarlyView.
Abstract High‐resolution mapping of seafloor habitats has wide applications for fisheries, conservation efforts, offshore infrastructure planning, mineral extraction, and scientific modeling. This study leverages existing widespread single‐beam acoustic data and machine learning to create habitat maps for the Gulf of Alaska at a spatial resolution of ...
Karuna Agarwal, Christopher N. Rooper, Kresimir Williams   +2 more
wiley   +1 more source

Automated Global Shallow Water Bathymetry Mapping Using Google Earth Engine

Remote Sensing, 2021
Global shallow water bathymetry maps offer critical information to inform activities such as scientific research, environment protection, and marine transportation.
Jiwei Li, David E. Knapp, Mitchell Lyons, Chris Roelfsema, Stuart Phinn, Steven R. Schill, Gregory P. Asner   +6 more
doaj   +1 more source

Lake Tahoe bottom characteristics extracted from SHOALS lidar waveform data and compared to backscatter data from a Multibeam echo sounder [PDF]

, 2002
The waveforms recorded by airborne lidar bathymetry (ALB) systems are currently processed only for depth information. In addition to bathymetry, multibeam echo sounder (MBES) systems provide backscatter data in which regions of different acoustic ...
Elston, G., Gardner, James V.
core   +1 more source

Individual movement modeling expands the power of migratory species observations: North Atlantic right whale case study

Limnology and Oceanography: Methods, EarlyView.
Abstract Understanding a population's distribution depends on observing the presence and movement of individuals throughout their range. For highly mobile marine species, these observations typically rely on high effort monitoring programs. Tracking enough individuals to understand trends in movement behavior is not always logistically feasible, and ...
Abigail M. Kreuser, Daniel E. Pendleton, Nicholas R. Record, Erin L. Meyer‐Gutbrod   +3 more
wiley   +1 more source

Rapidly declining seagrass meadows in Brazil: Findings from satellite imagery and local knowledge

People and Nature, EarlyView.
Abstract Due to the limitations of individual monitoring approaches, integrating social perceptions with multiple advanced technologies provides a new opportunity to gain a comprehensive understanding of ecosystem degradation. We combined historical aerial mapping, satellite imagery, semi‐structured interviews with local stakeholders, and a bilingual ...
Karine Matos Magalhães, Emma Deeks, Aline da Silva Cerqueira, Gabriel Henrique Ferreira Silva, Fabiana Aguiar Santos, Terry Dawson, Pavel Kratina   +6 more
wiley   +1 more source