Results 71 to 80 of about 6,191 (207)

Morphological evolution of the Kwinte Bank central depression before and after the cessation of aggregate extraction [PDF]

, 2010
Analyses of the records of ships registers and Electronic Monitoring Systems, of the trailer suction hopper dredgers, operating on the Belgian Continental Shelf, reveal that since the beginning of extraction in 1976, 75% of the total extracted volume ...
Bellec, V.K., Bonne, W., Degrendele, K., Roche, M., Schotte, P., Van Lancker, V.   +5 more
core   +1 more source

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

Millions of seafloor pits, not pockmarks, induced by vertebrates in the North Sea

Communications Earth & Environment, 2023
Seabed pockmarks are among the most prominent morphologic structures in the oceans. They are usually interpreted as surface manifestation of hydrocarbon fluids venting from sediments.
Jens Schneider von Deimling, Jasper Hoffmann, Jacob Geersen, Sven Koschinski, Arne Lohrberg, Anita Gilles, Igor Belkin, Christoph Böttner, Svenja Papenmeier, Sebastian Krastel   +9 more
doaj   +1 more source

Analisis Pengolahan Data Multibeam Echosounder Menggunakan Perangkat Lunak Mb-system dan Caris Hips And Sips Berdasarkan Standar S-44 Iho 2008 [PDF]

, 2017
Pengolahan data multibeam echosounder memiliki proses yang kompleks karena memerlukan beberapa koreksi untuk mendapatkan nilai kedalaman yang akurat, selain itu perangkat lunak yang digunakan untuk pemrosesan data multibeam memiliki harga lisensi yang ...
Brammadi, S. (Sendy), Mudita, I. (Imam), Nugraha, A. L. (Arief), Sudarsono, B. (Bambang)   +3 more
core  

Pengolahan Data Multibeam Echosounder Menggunakan Perangkat Lunak Hypack

Jurnal Hidropilar, 2015
Survei batimetri bertujuan untuk memetakan topografi dasar perairan. Seiring dengan kemajuan teknologi, metode survei batimetri ikut mengalami perkembangan. Salah satu instrumen yang digunakan untuk akuisisi data kedalaman adalah multibeam echosounder, dimana instrumen ini memanfaatkan teknologi gelombang akustik. Multibeam echosounder memiliki ...
Ujang Fatah, Johar Setiyadi, Edy Susanto, Dikdik S. Mulyadi   +3 more
openaire   +2 more sources

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

Near‐seabed sediment dynamics and fluxes on Chatham Rise, the effects of seabed disturbance, and implications for deep‐sea bottom trawling and seabed mining

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1460-1495, December 2025.
ABSTRACT Anthropogenic impacts are increasingly affecting deep‐sea environments, including seafloor sediment disturbances by bottom trawling and seafloor mining. Fieldwork in the ‘Resilience Of Benthic Ecosystems to Sedimentation’ (ROBES) project were conducted in 2018–2020 on the 400 m‐deep Chatham Rise crest, eastern Aotearoa New Zealand.
Scott D. Nodder, Christopher A. Eager, Joe O’Callaghan, Daniel Leduc, Sam Davidson, Stacy Deppeler, Grace Frontin‐Rollet, Peter Gerring, Sarah Searson, William Quinn, Steve George, Ron Ovenden, Sarah J. Bury, Julie Brown, Malcolm R. Clark   +14 more
wiley   +1 more source

Understanding the marine environment : seabed habitat investigations of the Dogger Bank offshore draft SAC [PDF]

, 2009
This report details work carried out by the Centre for Environment, Fisheries and Aquaculture Science (Cefas), British Geological Surveys (BGS) and Envision Ltd. for the Joint Nature Conservation Committee (JNCC).
Diesing, Markus, Forster, Rodney, Foster-Smith, Bob, Long, David, Morando, Angela, Stewart, Heather, Vanstaen, Koen, Ware, Susanne   +7 more
core  

Effects of an experimental in situ seabed disturbance on deep‐sea benthic ecosystem function and macro‐infaunal community structure on the Chatham Rise, Southwest Pacific

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1496-1529, December 2025.
ABSTRACT Expansion of extractive industries to deep‐sea environments will lead to increased stresses on seafloor ecosystems. We examined changes in environmental parameters following direct and indirect experimental benthic disturbance using a modified plough on the Chatham Rise (∼450 m water depth), Aotearoa/New Zealand. Measurements included sediment
Rachel Hale, Daniel Leduc, Campbell Murray, Ashley A. Rowden, Scott D. Nodder, Chris Eager, Rob Stewart, Christopher W. Hickey, Conrad Pilditch, Malcolm R. Clark   +9 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