SeaBeam depth changes associated with recent lava flows, Coaxial Segment, Juan De Fuca Ridge: Evidence for multiple eruptions between 1981–1993

SeaBeam depth changes associated with recent lava flows, Coaxial Segment, Juan De Fuca Ridge:... After a swarm of earthquakes was detected on the CoAxial segment of the Juan de Fuca Ridge in June‐July 1993, the area was resurveyed with SeaBeam multibeam sonar to search for depth changes associated with a submarine volcanic eruption. Quantitative comparison of the 1993 SeaBeam survey with surveys in 1981/82 and 1991 shows one area of seafloor depth change (up to 29 m) between 1991–93 exactly where a pristine lava flow was discovered. In addition, two other depth anomalies (up to 37 m and 20 m) are identified between 1981–91, evidence that other recent eruptions have occurred along this spreading ridge segment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geophysical Research Letters Wiley

SeaBeam depth changes associated with recent lava flows, Coaxial Segment, Juan De Fuca Ridge: Evidence for multiple eruptions between 1981–1993

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Publisher
Wiley
Copyright
Copyright © 1995 by the American Geophysical Union.
ISSN
0094-8276
eISSN
1944-8007
D.O.I.
10.1029/94GL01895
Publisher site
See Article on Publisher Site

Abstract

After a swarm of earthquakes was detected on the CoAxial segment of the Juan de Fuca Ridge in June‐July 1993, the area was resurveyed with SeaBeam multibeam sonar to search for depth changes associated with a submarine volcanic eruption. Quantitative comparison of the 1993 SeaBeam survey with surveys in 1981/82 and 1991 shows one area of seafloor depth change (up to 29 m) between 1991–93 exactly where a pristine lava flow was discovered. In addition, two other depth anomalies (up to 37 m and 20 m) are identified between 1981–91, evidence that other recent eruptions have occurred along this spreading ridge segment.

Journal

Geophysical Research LettersWiley

Published: Jan 15, 1995

References

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