FN Archimer Export Format
PT J
TI Character of seismic motion at a location of a gas hydrate-bearing mud volcano on the SW Barents Sea margin
BT 
AF FRANEK, Peter
   MIENERT, Jurgen
   BUENZ, Stefan
   GELI, Louis
AS 1:1;2:1;3:1;4:2;
FF 1:;2:;3:;4:PDG-REM-GM;
C1 CAGE Ctr Arctic Gas Hydrate Environm & Climate, UiT, Dept Geol, Tromso, Norway.
   IFREMER, Dept Marine Geosci, Plouzane, France.
C2 UNIV ARCTIC UIT NORWAY, NORWAY
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-GM-LGG
   PDG-REM-GM
IN WOS Ifremer jusqu'en 2018
   copubli-europe
TC 21
UR https://archimer.ifremer.fr/doc/00204/31491/29901.pdf
LA English
DT Article
AB The Håkon Mosby mud volcano (HMMV) at 1270 m water depth on the SW Barents Sea slope has been intensively studied since its discovery in 1989. A variety of sensors monitored morphological, hydrological, geochemical, and biological parameters in the HMMV area. An ocean bottom seismometer deployment allowed us to register seismic motion for 2 years, from October 2008 to October 2010. The analysis of seismic records documents two types of seismic signals. The first type are harmonic tremors with frequency peaks around 4–5 and 8–10 Hz that occur in swarms. Their origin could be from fluid flow circulation or resonant vibrations of gas bubbles or from delayed movement of fluid-rich sediments in the conduit or in a deeper pseudo-mud chamber of the HMMV. Because swarms occur with a periodicity of ~ 6 h, tide-related effects are suspected to influence the mechanism originating the tremors. The second type of signals are regional earthquakes that were in 15 cases recognized in seismic records. The activity of harmonic tremors was not significantly affected by earthquakes.
PY 2014
PD AUG
SO Journal Of Geophysical Research-solid Earth
SN 0148-0027
PU Amer Geophysical Union
VL 119
IS 8
UT 000342512900003
BP 6159
EP 6177
DI 10.1002/2014JB010990
ID 31491
ER

EF