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benefciary organization must mount a full cruise on one of
its own ships in return. Members, as per 2014, are: France
(Ifremer), Germany (University of Hamburg, GEOMAR and
Alfred Wegener Institute), Netherlands (NIOZ), Norway (In-
stitute of Marine Research-IMR), Spain (CSIC), and the U.K.
(NERC).
The OFEG feet includes 21 research vessels from six
countries: 10 global-class, eight ocean-class and three re-
gional-class. OFEG marine facilities include ROVs, AUVs,
submersibles, and large multichannel seismic and mobile
compressors.
To arrange specifc barter, interested marine scientists
should contact the representatives in their own country,
who will act on behalf of the marine community to negoti-
ate barters as required.
Methods
The integration of different types of multiscale acoustic
and high-resolution data allows detailed mapping of active
faults and submarine landslides to assess potential earth-
quake (and tsunamigenic) hazard and risk by constraining
seismic parameters, such as geometry, slip rate, frequency,
maximum magnitude, tie recurrence period, etc. These pa-
rameters are critical for assessing seismic hazard models,
especially when considering large-magnitude earthquakes,
and for constraining tsunami models.
The cruise collected data using multichannel (MCS) and
wide-angle seismic (WA) magnetics, gravity, high-resolution
bathymetry and parametric echosounder between 18° N
and 22° 30' N, and 103° 30' W and 107° 30' W, mainly
at the Rivera Plate. The MCS experiment used, for the frst
time, the 6-km-long digital seismic streamer of the Span-
ish RV Sarmiento de Gamboa aboard the RSS James Cook,
acquiring a total of 1,524 km of deep multichannel seismic
data. The resulting 15 MCS profles show the structure of
the Rivera Plate with unprecedented resolution and penetra-
tion, from the oceanic domain up to the Continental Shelf.
Time-migrated water velocity section of a brute stack in seis-
mic line TS11 showing the subduction of the Rivera Plate be-
neath the NA Plate at around 7 to 8.5 s TWTT, roughly 2.5 to
3.5 s TWTT below the seafoor, clearly defning the subduction
plane.