Open AccessDOI
Physical properties of marine sediments
John E. Nafe,Charles L. Drake +1 more
TLDR
In this paper, it was shown that seafloor sediments that blanket the ocean floor are of widely varying thickness but seismic observations indicate that 200 to 400 meters in the Pacific and one kilometer in the Atlantic are fairly typical values for deep water.Abstract:
: The unconsolidated sediments that blanket the ocean floor are of widely varying thickness but seismic observations indicate that 200 to 400 meters in the Pacific and one kilometer in the Atlantic are fairly typical values for deep water. At present direct observation of these sediments is limited to such samples as may be recovered by dredging or coring operations, for drilling has been carried out only in the shallow waters of the coastal shelves. Knowledge of the physical properties of the great bulk of the sediments deeper than the few tens of feet reached by coring equipment is thus necessarily derived from geophysical observations.read more
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Sidescan sonar images of mud volcanoes from the Mediterranean Ridge: possible causes of variations in backscatter intensity
TL;DR: In this paper, a survey of a large field of mud diapirs on the Mediterranean Ridge south of Crete was carried out using both OKEAN (9.5 kHz) and MAK-1M (30 kHz) sidescan sonar systems during Leg-2 of the Third Training Through Research cruise of R/V Gelendzhik in June and July, 1993.
usSEABED: Atlantic Coast Offshore Surficial Sediment Data Release U.S. Geological Survey Data Series 2005-118, version 1.0
TL;DR: The usSEABED database as discussed by the authors provides a synthesis compilation of published and unpublished sediment texture and other geologic data about the seafloor from a diverse range of sources, including the USGS's Marine Aggregate Resources and Processes Assessment and Benthic Habitats projects.
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Possible mechanisms of magma redistribution under Mt Etna during the 1994-1999 period detected through microgravity measurements
TL;DR: In this article, a microgravity data set acquired along the Etna network and spanning a 5 year long period (1994•1999) was analyzed and the main feature observed is a complete gravity increase (1994− 1996)−decrease (1997−1999) cycle mainly affecting the southeastern sector of the volcano and reaching a maximum amplitude of approximately 100 µGal peak-to-peak.
Journal ArticleDOI
A proposed super‐thick sedimentary basin, Bay of Bengal
TL;DR: A super-thick sedimentary basin under the northern Bay of Bengal is proposed in this article, based on data from surface wave dispersion, seismic refraction, Sn attenuation, and geology.
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A seismic refraction and reflexion study of the continent-ocean transition beneath the north Biscay margin
TL;DR: In this article, the authors applied two-ship multichannel seismic data to the study of the change in crustal structure of a rifted passive margin from the shelf to the ocean crust.