Danish
geologists say a 4.4-magnitude
quake has rattled the seabed between Denmark and Sweden, causing no
damage or casualties. Trine Dahl-Jensen of the Geological Survey of
Denmark and Greenland (GEUS) said Monday’s quake was “pretty
strong” by Danish standards. Dahl-Jensen says such quakes happen
once or twice a decade.
The
epicenter was 20 kilometers (12.4 miles) southeast of the Danish
island of Anholt in the Kattegat Sea. Media in Denmark and Sweden
reported that residents in the two Scandinavian countries woke up
when they felt the earth shake at 0257 GMT (10:57 p.m. EDT Sunday).
A
magnitude-4.5 earthquake
has shaken a rural area of Central California. A U.S. Geological
Survey computer-generated report says Monday’s 12:36 a.m. quake
was centered 16 miles south-southwest of Coalinga in the San Joaquin
Valley and 123 miles southeast of San Jose. A Coalinga police
officer says several people have reported feeling the quake but
there are no reports of damage.
Large
underwater volcano found off foot of continental shelf of
West Iceland?
ICELAND
A mountain
which the Icelandic Marine Research Institute (Hafró) discovered on
the ocean floor west off the Snæfellsnes peninsula in West Iceland
during an expedition earlier this summer may turn out to be a
previously unknown volcano.
“Multi-laser
measurements… revealed a large underwater mountain deep off the
foot of the continental shelf approximately 120 nautical miles west
of Snæfellsnes,” a statement from Hafró reads, according to
Fréttablaðið.
The
mountain, which is at a depth of 950 to 1,400 meters is around 450
meters high, similar to Ingólfsfjall in south Iceland. However, it
extends over 300 square kilometers, which is ten times the square
measure of Ingólfsfjall.
The
shape of the mountain is very similar to that of table mountains and
it appears to be geologically young.
“The
analysis of a rock sample from the mountain will determine whether
this is the case or whether it is a volcano connected with an old
drift belt, which might mean that it is 20 million years old,” the
statement continues.
During
the expedition multi-laser measurements were made between West
Iceland and Greenland to map the shape of the ocean floor in these
commonly-used fishing grounds and explore the environment of
powerful ocean currents. A total of 9,000 square kilometers were
covered during the 11-day expedition.
No comments:
Post a Comment
Note: only a member of this blog may post a comment.