The National Methane Hydrates R&D Program
The DOE/JIP Gulf of Mexico Hydrate Research Cruise
During this expedition we will maintain a log of information relayed from the chief Scientist on the expedition. Whenever possible, images will be displayed along with the text.
April 19 - Day 3 - Status Report
19 April 2005 - On location at Atwater Valley Block 13
Location: On location Atwater Valley Block 13
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Core Lab Setup on Uncle John |
Science Update: First samples (Remotely Operated Vehicle (ROV) push cores of surface sediments and bottom water samples) were collected at proposed site of AT13#1 from 0345 to 0410 hrs this morning. The ROV was used for sampling while preparing to start the Logging While Drilling (LWD) hole. Only two of the five coring attempts had significant core recovery. Cores were sectioned and sampled for pore water chemistry and dissolved gas analysis. Initial results (alkalinity changes) indicate organic matter oxidation is ongoing, probably linked with sulfate reduction. There was no H2S odor in the cores. These shallow push cores are ancillary to the main deep coring program, but provide a valuable exercise and trial for our core handling and analytical procedures, as well as information on sediments at the seabed.
Plans: Core handling teams conducted a review/rehearsal of core processing procedures on Tuesday afternoon. Continuing to set up and calibrate equipment while waiting for completion of LWD holes to begin coring.
Photos:
Day 3 Photo Gallery - Preparation for Drilling
Day 2 Photo Gallery Loading the Uncle John [PowerPoint]
The drill ship out to sea - Setting up the lab [PowerPoint]
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