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USGS CMG Z-1-06-SC Metadata

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ID Z-1-06-SC
Abstract Monterey Bay Aquarium Research Institute,United States Geological Survey, Menlo Park, California. Chief Scientists: David Caress, MBARI, Charlie Paull, MBARI. Chirp and Multibeam Sonar data (AUV) of field activity Z-1-06-SC in southern Santa Monica Basin from 06/04/2006 to 06/10/2006
Organization Monterey Bay Aquarium Research Institute
United States Geological Survey, Menlo Park, California
Chief Scientist David Caress
Charlie Paull
Activity Type Chirp and Multibeam Sonar
Platform Zephyr
Area of Operation southern Santa Monica Basin, Southern California
Bounding Coordinates
-118.82239    -118.53330
Ports LEAVE Moss Landing, CA
ARRIVE Moss Landing, CA
Dates 06/04/2006 (JD 155) to 06/10/2006 (JD 161)
Analog Materials No analog holdings.
Information Specialist
Bill Normark (USGS)
Charlie Paull
David Caress
Bill Ussler
Rendy Keaton
Bill Normark
Duane Thompson
Doug Conlin
Hans Thomas
Paul Ban
Aaron Gregg
Matt Noyes
Equipment Used
Five AUV dive days were planned in Santa Monica Basin offshore Los Angeles, CA.
The primary targets were a mud volcano from which methane hydrate was cored in
2003 (see USGS cruise A-1-03-SC) and giant scour depressions (2 km wide) had
been imaged on USGS multibeam data in the upper reach of the Redondo fan
valley. The areas mapped are in water depths of 650 to 850 m. The primary MBARI
objective of these dives was to determine the shallow structure and shape of
the mud volcano. In addition, the USGS project interests were to determine the
form and sedimentary structure of the fan valley floor in the area of the giant
scours. Both of the these target areas had been photographed and sampled using
the MBARI ROV Tiburon during cruise W-1-05-SC.
Information to be Derived
Very high-resolution
bathymetry and subbottom structure in the deeper part of Santa Monica Basin.
Bathymetric maps are produced at a one-meter contour interval.
1200/JD155 R/V Zephyr departs Moss Landing.
~1500/JD156  Begin first AUV dive on outer shelf in Santa Monica Bay
~0100/JD161 Complete final AUV Dive near ODP Site 1015
~0600/JD162 R/V Zephyr arrives in Moss Landing
A total of 5 AUV dives were completed. Each dive was initiated on the outer
shelf edge in Santa Monica Bay so that the AUV's starting position could be
determined by GPS at the launch site. The vehicle then drives to the pre-planned
survey site by tracking the sea floor with the Doppler sonar log. The AUV can
survey with the multibeam sounding system and chirp sonar for about 8 to 9
hours; it then returns to the sea surface to be picked by the R/V Zephyr.
The expedition consisted of two separate operations and separate scientific
parties. The R/V Zephyr would launch the AUV in early morning and then wait to
retrieve the vehicle after it finished mapping. The R/V Zephyr would then dock
at Marina del Rey around early evening where the data would be transferred to
a server in a temporary field office established in an apartment adjacent to
the marina. The second scientific party would then process the data until
about 0100, at which time the trackline for the next survey would be set and
prepared to load into the AUV.
All primary objectives of the cruise were attained.
MBARI's automated underwater vehicle (AUV) for sea-floor mapping.
The AUV has a high-resolution Edgetech chirp sonar profiling system and a mult
ibeam sounding system and uses both Doppler sonar tracking of the sea floor and
an inertial guidance system for position control. The AUV surveys are conducted
about 60 m above the sea floor.
Got Help? For Z-1-06-SC, we would appreciate any information on -- analog materials, contract, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, owner, project, 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    
Seismic data chirp.seis
Times   060.times    

Z-1-06-SC location map of where navigation 

equipment operated
Z-1-06-SC location map of where navigation 

equipment operated

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