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ID P-2-07-MB
Also Known As MBARI V3029 to 3047
Abstract Monterey Bay Aquarium Research Institute,United States Geological Survey, Menlo Park, California. Chief Scientist: Charlie Paull. Vibracoring data (vibracore) of field activity P-2-07-MB in upper Monterey Canyon from 06/26/2007 to 06/28/2007
Organization Monterey Bay Aquarium Research Institute
United States Geological Survey, Menlo Park, California
Project/Theme Urban Ocean
Chief Scientist Charlie Paull
Activity Type Vibracoring
Platform Point Lobos
Area of Operation upper Monterey Canyon, Monterey Bay, CA
Bounding Coordinates
36.79334
-121.88607    -121.84338
36.79290
Ports leave Moss Landing, CA
arrive Moss Landing, CA
Dates 06/26/2007 (JD 177) to 06/28/2007 (JD 179)
Analog Materials list
Scanned Materials p-2-07-mb.ops log (pdf)
Information Specialist
Bill Normark
Crew
Charlie Paull Chief Scientist, MBARI
Rendy Keaten Scientist, MBARI
Bill Ussler Scientist, MBARI
Jane Curtner Scientist (only 6/28/07), MBARI
Michele Morselli Visiting scientist, Universita di Ferrara, Italy
Julie MBARI summer intern (only 6/26/07), MBARI
Katherine Maier Scientist (only 6/26/07), Stanford
Jake Covault Scientist (only 6/27/07 and 6/28/07), Stanford
Mark Talkovic ROV Ventana pilot, MBARI
Knute Brekke ROV Ventana pilot (only 6/26/07 and 6/28/07), MBARI
D.J. Osborne ROV Ventana pilot (only 6/26/07 and 6/27/07), MBARI
Ian Young Point Lobos crew (Captain), MBARI
Greg Maudlin Point Lobos crew, MBARI
Mark Aiello Point Lobos crew , MBARI
Erik Thunstrom Point Lobos crew , MBARI
James Boedecker Point Lobos crew , MBARI
Frank Flores Point Lobos crew (only 6/26/07 and 6/27/07), MBARI
Perry Shoemake Point Lobos crew (only 6/28/07), MBARI
Equipment Used
vibracore
Purpose
Three days of vibracoring with the ROV Ventana's newly outfitted 14'
aluminum cores were planned in the upper Monterey Canyon. The primary goal was
to acquire an approximately 130-meter long transect of cores across the
sediment waves in the Monterey Canyon floor at water depths of approximately
285 meters. Processing and analysis of these cores will be used to study the
origin of the sediment waves. High resolution AUV mapping of the canyon floor
and sediment waves was acquired during a previous MBARI cruise on June 18, 2007.
Information to be Derived
Vibracores up to 14 feet in length with aluminum liners were obtained
with the ROV Ventana.  The cores were logged on a GeoTek whole-core-logger at
USGS on the day following their collection so that results could be used to
redirect the ongoing core collection.  The cores will be used to study the
origin of the sediment waves.
Summary
1400/JD177 R/V Point Lobos departs Moss Landing

1610/JD177 ROV Ventana dives for first core
2200/JD177 ROV Ventana dives for last core
1630/JD177 R/V Point Lobos arrives in Moss Landing
1400/JD178 R/V Point Lobos departs Moss Landing
1515/JD178 ROV Ventana dives for first core
2140/JD178 ROV Ventana dives for last core
2245/JD178 R/V Point Lobos arrives in Moss Landing
1400/JD179 R/V Point Lobos departs Moss Landing
1510/JD179 ROV Ventana dives for first core
2155/JD179 ROV Ventana dives for last core
2300/JD179 R/V Point Lobos arrives in Moss Landing
This cruise was the first use of a 14' aluminum core tube with the ROV Ventana's vibracoring system. A Homer Beacon was used to position the cores. The core sites within 60 meters of the beacon were selected by diving to the beacon, then moving off on a course of 290o or 110o to a pre-selected distance. Core sites further away were approached using ROV navigation to locate the general area (~10m) and using the beacon to record the range. Eighteen cores were collected along the transect. The last core was taken where the bottom was suspected to be softer sediment to test the full penetration of the 14' core tube. Cores recovered on the first day recovered a much shorter amount of sediment in the cores than was expected. Before each core was removed from the ROV Ventana, water was drained from the portion of the core tubing not filled with sediment by using a hacksaw to create a small hole in the core tube above the sediment. Cores were then capped, labeled, and split into sections (if core was over 1.5m). Alterations were made on the second and third days of coring to increase the penetration of and recovery in the core tube.
Notes
MBARI's remotely operated vehicle (ROV) Ventana was used to obtain
vibracores. The ROV Ventana had a 14' aluminum core tube attached to the
vibracoring system in addition to the underwater cameras it typically carries.
The ROV Ventana is connected to the R/V Point Lobos by a surface slack cable
through which it communicates with pilots in the onboard control room.  The
cores were positioned relative to a Homer Beacon that was placed at (36.7931N,
121.8438 W) during the first dive and removed at the end of the third day of 
coring.
Got Help? For P-2-07-MB, we would appreciate any information on -- contract, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, owner, project number, publications, scanned materials, seismic description, station count, station description, submersible, tabulated info.
Type Webpage KMZ Arc         Metadata        
Metadata data     txt  data  FAQ  xml
Navigation data nav    
Samples data samp    
Times   060.times    

P-2-07-MB location map of where navigation 

equipment operated
P-2-07-MB location map of where navigation 

equipment operated

 
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