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80 ping pie
diagrams corresponding to
3D imagery below.
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EM710 3D WC Imagery - S to N pass
0450 GMT J204 July 23 2009
(low threshold to identify the 3 streamers)
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EM710 WC Imagery - NE to SW pass
1350 GMT J202 July 21st 2009
(stronger threshold to pick the mooring out from the DSL)
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The surrounding figures
illustrate the preliminary highlights of the vent imaging.
Coordinates of the base
of the plume:
144.775463° N 14.600829° E ( 14° 36.0497' N -- 144°
46.5278' E)
It appears that there is a submerged mooring located due east of the
summit. It consists of an upper unit (flotation?) suspended ~110m off
the seabed and a mid-mooring object (instrument package?) that sits
about 60m off the seabed. The dual, vertically aligned targets were
found on all 5 passes over the summit in the same location (2 on JD202
and 3 on JD204), suggesting a permanent rather than an ephemeral object.
Coordinates of the
apparent mooring:
144.776893° N 14.600853° E (14° 36.0512' N -- 144°
46.6136' E)
Detailed
Imagery of Peak including locations of vent and mooring
plot showing the
location of the vent and the mooring
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topographic
profile along
section indicated in map
to left.
(corrected metres)
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Mooring - JD202 NE to SW pass
** WC imagery is
sonar relative
(excluding draft and
refracted ray path, using nominal 1500m/s).
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Mooring - JD202 NW to SE pass
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