Results 51 to 60 of about 46,415 (246)

Incorporating environmental DNA metabarcoding for improved benthic biodiversity and habitat mapping

Remote Sensing in Ecology and Conservation, EarlyView.
Seafloor imagery is commonly used to collect information about the distribution of benthic organisms in order to generate habitat and biodiversity maps. Recent advances in genomics (e.g., environmental DNA; eDNA) show potential to complement video surveys for habitat mapping, but there have been few examples testing this.
Rylan J. Command, Shreya Nemani, Benjamin Misiuk, Mehrdad Hajibabaei, Nicole Fahner, Emily Porter, Greg Singer, Beverly McClenaghan, Katleen Robert   +8 more
wiley   +1 more source

Detecting small seamounts in multibeam data using convolutional neural networks

Frontiers in Marine Science
Seamounts play a crucial role in marine ecosystems, ocean circulation, and plate tectonics, yet most remain unmapped due to limitations in detection methods.
Tobias Ziolkowski, Colin W. Devey, Agnes Koschmider   +2 more
doaj   +1 more source

Submarine Small-Scale Features of Cyclic Steps in the Penghu Canyon: Implications for the Migration of Canyon

Journal of Marine Science and Engineering, 2022
The submarine canyons are an important clue to study the evolution process of seafloor geomorphology and they generally indicate the significant linear grooves on the seafloor related to seafloor geodynamic erosion during the evolution of geomorphology ...
Shaoyu Zhang, Junjiang Zhu, Yonggang Jia, Sanzhong Li, Ruixue Chen, Xingquan Chen, Xiaolin Ou, Qianqian Li   +7 more
doaj   +1 more source

Interactive 3-D Visualization: A tool for seafloor navigation, exploration, and engineering [PDF]

, 2000
Recent years have seen remarkable advances in sonar technology, positioning capabilities, and computer processing power that have revolutionized the way we image the seafloor.
Gardner, James V., Gee, Lindsay, Mayer, Larry A., Paton, Mark, Ware, Colin   +4 more
core   +2 more sources

Palaeolandscape reconstruction of a shallow coastal embayment in Kattegat, Denmark—influence of sea‐level changes during the latest Pleistocene and Holocene

Boreas, EarlyView.
We analyse the geological processes of a coastal embayment in the Kattegat. Using high‐resolution seismic data and sediment cores, we describe a geological evolution from glacial to shallow marine stages with a variety of preserved facies from different depositional settings, including glacio‐lacustrine, telmatic, limnic and coastal environments.
Katrine Juul Andresen, Lars Ole Boldreel, Ole Bennike, Christof Pearce, Mikkel Fruergaard, Verner Brandbyge Ernstsen, Aart Kroon, Nicole Rita Posth, Marit‐Solveig Seidenkrantz   +8 more
wiley   +1 more source

Evaluating the possible role of bottom currents and internal waves in shaping seafloor morphology in a mesophotic reef

Sedimentology, EarlyView.
ABSTRACT Mesophotic reefs are located in low light conditions which, depending on the region, are usually found in water depths greater than ~30 m. They are less affected by ocean warming than reefs found in shallower water depths and thus might become increasingly important for the sustainability of marine biodiversity.
Or M. Bialik, Henriette Wilckens, Omri Gadol, Aaron Micallef, Christian Betzler, Ole Johannes R. Sørensen, Hagai Nativ, Yizhaq Makovsky   +7 more
wiley   +1 more source

Automated, objective texture segmentation of multibeam echosounder data - Seafloor survey and substrate maps from James Island to Ozette Lake, Washington Outer Coast [PDF]

, 2007
Without knowledge of basic seafloor characteristics, the ability to address any number of critical marine and/or coastal management issues is diminished. For example, management and conservation of essential fish habitat (EFH), a requirement mandated by
Beaudoin, Jonathan D., Cutter, George R., Intelmann, Steven S.   +2 more
core  

The International Bathymetric Chart of the Arctic Ocean (IBCAO) Version 3.0 [PDF]

, 2012
[1] The International Bathymetric Chart of the Arctic Ocean (IBCAO) released its first gridded bathymetric compilation in 1999. The IBCAO bathymetric portrayals have since supported a wide range of Arctic science activities, for example, by providing ...
Accettella, Daniela, Anderson, Robert M., Armstrong, Andy, Beinhoff, Paul, Camerlenghi, Angelo, Church, Ian, Coakley, Bernard, Dowdeswell, Julian A., Edwards, Margo, Forbes, Steve, Fridman, Boris, Gardner, James V., Hall, John K., Hell, Benjamin, Hestvik, Ole, Hodnesdal, Hanne, Jakobsson, Martin, Krisoffersen, Yngve, Marcussen, Christian, Mayer, Larry A., Mohammad, Rezwen, Mosher, David, Nghiem, Son V., Noormets, Riko, Pedersen, Richard, Pedrosa, Maria Teresa, Rebesco, Michele, Schenke, Hans Werner, Travaglini, Paola G., Weatherall, Pauline, Zarayskaya, Yulia   +30 more
core   +2 more sources

Variations in downslope activity and bottom current dynamics in a land‐detached submarine channel system since the Last Glacial Maximum

Sedimentology, EarlyView.
ABSTRACT The Gollum Channel System is a land‐detached large‐scale canyon‐channel system situated offshore southwest Ireland on the Northeast Atlantic margin. The system has been considered inactive with downslope gravity flows since the last glacial period, but geophysical data in some of its branches do suggest Holocene activity.
Lotte Verweirder, Aggeliki Georgiopoulou, Kobus Langedock, Fred Fourie, Martin White, Sara Benetti, Fabio Sacchetti, Wieter Boone, David Van Rooij   +8 more
wiley   +1 more source

Measuring Centimeter-Scale Sand Ripples Using Multibeam Echosounder Backscatter Data from the Brown Bank Area of the Dutch Continental Shelf

Geosciences, 2020
Backscatter data from multibeam echosounders are commonly used to classify seafloor sediment composition. Previously, it was found that the survey azimuth affects backscatter when small organized seafloor structures, such as sand ripples, are present ...
Leo Koop, Karin J. van der Reijden, Sebastiaan Mestdagh, Tom Ysebaert, Laura L. Govers, Han Olff, Peter M. J. Herman, Mirjam Snellen, Dick G. Simons   +8 more
doaj   +1 more source