Results 171 to 180 of about 2,697 (210)

Sanctuary for vulnerable Arctic species at the Borealis Mud Volcano. [PDF]

Nat Commun
Panieri G, Argentino C, Savini A, Ferré B, Hemmateenejad F, Eilertsen MH, Mattingsdal R, Ramalho SP, Eidvin T, Youngs S, Colson BC, Michel APM, Kapit JA, Swanborn D, Rogers AD, Angeles IB, Polteau S, Kalenitchenko D, Buenz S, Mazzini A.   +19 more
europepmc   +1 more source

Expedition Program PS108 [PDF]

, 2017
Wenzhöfer, Frank
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Mega-pockmarks and linear pockmark trains on the West African continental margin

Marine Geology, 2007
Abstract Seabed pockmarks, the manifestation of the natural process of fluid escape at the seabed, are a widespread feature of the equatorial West African continental margin. Pockmarks occur singly, in small groups, in large random fields and in organized arrays or ‘pockmark trains’.
Robin Pilcher, John Argent
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Seafloor pockmarks offshore Vancouver Island

2022
<p>Pockmarks are crater-like depressions of erosive nature in marine or lacustrine sediments. They are often interpreted as the surface manifestation of hydrocarbon venting but may also result from freshwater flow in coastal regions, compaction induced sediment dewatering, or bottom scouring around natural or anthropogenic objects. Hence,
Jacob Geersen, Elena Pesenti, Michael Riedel, Jens Schneider von Deimling, Luisa Rollwage, Noemi Schulze, Martin Scherwath   +6 more
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Pockmarks off Big Sur, California

Marine Geology, 2002
A pockmark field was discovered during EM-300 multi-beam bathymetric surveys on the lower continental slope off the Big Sur coast of California. The field contains ∼1500 pockmarks which are between 130 and 260 m in diameter, and typically are 8–12 m deep located within a 560 km2 area.
C. Paull, W. Ussler III, N. Maher, H.G. Greene, G. Rehder, T. Lorenson, H. Lee   +6 more
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Pockmarks on the Scotian Shelf

Geological Society of America Bulletin, 1970
Pockmarks are cone-shaped despressions that occur in large numbers across the LaHave clay of the Scotian Shelf. They normally range in diameter from 15 to 45 m and in depth from 5 to 10 m. They were possibly formed by ascending gas or subsurface water leakage from underlying coastal plain sediments.
LEWIS H. KING, BRIAN MacLEAN
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Sedimentary and structural control on pockmark development—evidence from the Nyegga pockmark field, NW European margin

Geo-Marine Letters, 2009
The Nyegga region, located at water depths of about 600–800 m on the NW European continental margin, contains more than 200 pockmarks. Recently collected TOPAS seismic profiles and EM1002 bathymetric records now provide high-resolution information on their seabed and shallow sub-seabed geological setting.
Berit Oline Hjelstuen, Haflidi Haflidason, Hans Petter Sejrup, Atle Nygård   +3 more
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Terrain aided underwater navigation using pockmarks

OCEANS 2009, 2009
Terrain aided navigation techniques are attractive for obtaining submerged position fixes for an underwater vehicle. However, their use is dependent on a certain degree of variation in the terrain. This paper investigates the performance of terrain navigation algorithms in an area with pockmarks, i.e.
Kjetil Bergh Anonsen, Ove Kent Hagen
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Deep sea pockmark environments in the eastern Mediterranean

Marine Geology, 2003
A great number of circular to isometric depressions have been observed on the deep water seafloor in the eastern Mediterranean by MAK-1 and ORETech deep-tow side-scan sonar during several TTR cruises of the UNESCO Floating University Program since 1993, and also by visual observations made during the late 1998 French-Dutch MEDINAUT expedition.
Dimitrov, L., Woodside, J.M.
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New statistical methods for investigating submarine pockmarks

Computers & Geosciences, 2011
We investigate the applicability of some novel spatial analysis techniques, developed for studies of astrophysical datasets, to the analysis of spatial point data in sedimentary basins. The techniques are evaluated and compared with standard methods using two test areas that contain large numbers of submarine pockmarks developed in distributed arrays ...
Annabel Cartwright, Jennifer Moss, Joe Cartwright   +2 more
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