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Logbook: September 20, 2004

image of spider crab at Hulk
Spider crab at Bastille vent where a Resistivity-Temperature-Hydrogen (RTH) sensor was deployed. ROPOS positioned a sensor over the gray cone to download data from the RTH.
 

Dive R852 successfully ended at 1040 PDT after accomplishing all its primary tasks. Samples (including gas tight and high temperature fluid samples) were taken at Sully, Hulk and Bastille vents. Bastille vent is interesting because it used to be devoid of vent animals, and the vent fluids were of a higher temperature and different chemistry prior the 1999 Endeavour earthquake swarm. Since the earthquakes the temperatures have dropped up to 20 degrees and the vents are now covered with vent animals. This is an example of the dynamic changes that are often occuring on the mid-ocean ridges.

After the dive, the ship transited to Cobb seamount to recover a current meter mooring that was deployed two years ago. The ship then was en route to Axial volcano to begin this year's NeMO research activities.

 

 

Sep/Oct 2004
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26 27 28 29 30 1  2
Click on day to view other logbook entries. <- Back | Forward->

 

Today's photos
click for larger view
Sully smoking
View of Sully vent...
image of ROPOS arms
Two arms of ROPOS...

 

 
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