Results 91 to 100 of about 2,586 (213)

Thresholds of Wave Forcing: Implications for Atoll Reef Dynamics Under Sea Level Rise

Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract We investigate the response of shallow reef flow to tidal variability and wave exposure during a 4‐month field campaign in southern Huvadhu Atoll, Maldives. Incident waves breaking on steep fore reefs and reef crests generate a setup proportional to offshore wave height that drives a cross‐reef flow. We emphasize a critical threshold—where the
M. Lindhart, G. Masselink, A. Holsclaw, T. Scott   +3 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

AI‐Based Autonomous Sailboat Navigation: A Review

Journal of Field Robotics, Volume 42, Issue 8, Page 4157-4180, December 2025.
ABSTRACT This review explores the recent advancements in AI‐driven autonomous sailboat navigation, underscoring its pivotal role in ocean monitoring and real‐time maritime data collection. Drawing on an extensive range of primary and secondary sources, the study critically evaluates current challenges, innovative control algorithms, and path planning ...
Vishali Mankina, André P. D. Araújo, Raphael Guerra, Esteban W. G. Clua, Carlo Cernicchiaro, Luiz M. G. Gonçalves, Cosimo Distante   +6 more
wiley   +1 more source

Multibeam 3D Underwater SLAM with Probabilistic Registration

Sensors, 2016
This paper describes a pose-based underwater 3D Simultaneous Localization and Mapping (SLAM) using a multibeam echosounder to produce high consistency underwater maps.
Albert Palomer, Pere Ridao, David Ribas
doaj   +1 more source

A Possible Tsunamigenic Near‐Trench Strike‐Slip Fault, Offshore North Ecuador–South Colombia

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Seismic reflection and bathymetry collected along the Ecuador–Colombia obliquely convergent margin allow the first characterization of the NNE‐trending, near‐trench strike‐slip Ancon Fault in the possible source region of the 1906‐Mw8.6–8.8 and 1979‐Mw8.2 earthquakes, which produced devastating tsunamis.
J.‐Y. Collot, G. Ratzov, F. Michaud, A. Galve, J.‐N. Proust, M. Gonzalez, J.‐F. Lebrun, M. Laigle, B. Marcaillou   +8 more
wiley   +1 more source

Cyclic Pockmark Formation Linked to Plio‐Pleistocene Sea‐Level Rise on the Chatham Rise, New Zealand

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Pockmarks are geomorphological depressions on the seafloor in various underwater environmental settings. They are commonly linked to fluid release from subsurface reservoirs; however, the processes involved, fluid types, and relative timing of their formation often remain enigmatic.
Fynn Warnke, Ingo A. Pecher, Lorna J. Strachan, Jess I. T. Hillman, Brandon Dugan   +4 more
wiley   +1 more source

Vertical uncertainty in the multibeam echosounder SWATH width [PDF]

, 2015
W artykule przedstawiono analizę niepewności pomiaru głębokości za pomocą echosondy wielowiązkowej. Scharakteryzowano znaczenie systemów „wielowiązkowych” w bezpieczeństwie żeglugi i transportu morskiego.
Naus, K., Felski, A., Grządziel, A., Wąż, M.   +3 more
core  

Experimental seabed disturbance effects on Chatham Rise deep‐sea meiofaunal communities, Southwest Pacific

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1388-1421, December 2025.
ABSTRACT Growing global demand for deep‐sea resources may lead to increased pressure on benthic ecosystems. Here we examined changes in meiofaunal communities following an in situ physical disturbance experiment. A significant change in meiofaunal community structure in surface (0‐1 cm) and subsurface (1‐5 cm) sediments was observed immediately ...
Daniel Leduc, Campbell Murray, Ashley A. Rowden, Scott D. Nodder, Rachel Hale, Malcolm R. Clark   +5 more
wiley   +1 more source

Effects of experimental in situ seabed disturbance on deep‐sea macrofaunal communities of Chatham Rise, Southwest Pacific

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1422-1459, December 2025.
ABSTRACT With the possibility of deep‐sea mining of mineral resources occurring, it is necessary to understand potential impacts on benthic communities. Previous simulated mining experiments revealed direct benthic impacts; however, indirect impacts of sedimentation are not well understood.
Campbell Murray, Ashley A. Rowden, Daniel Leduc, Scott D. Nodder, Rachel Hale, Jane Halliday, Malcolm R. Clark   +6 more
wiley   +1 more source

M70/3 raw data of EM120 multibeam echosounder (bathymetry & beam time series) [PDF]

, 2019
Between 26.11.2006 and 08.12.2006, bathymetric data was acquired in the Eastern Mediterranean Sea during the R/V METEOR cruise M70/3, which was aimed at key processes at cold seeps in the Anaximander Mountains south of Turkey.
Bohrmann, Gerhard, Brüning, Markus
core   +1 more source