Reflection seismic, magnetic, gravimetric survey of the Pacific Margin of the Antarctic Peninsula (Summer 1989-90, 1991-1992)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Reflection seismic, magnetic, gravimetric survey of the Pacific Margin of the Antarctic Peninsula (Summer 1989-90, 1991-1992)
Description:
Abstract:
During the Antarctic summers1989 - 1990 and 1991 - 1992, the Osservatorio Geofisico Sperimentale realized a geophysical survey in the Ross Sea, making use of the Research Vessel OGS - Explora, collecting magnetic, gravimetric and seismic data. This research has been carried out in the context of the Nation Research Program in Antarctic (PNRA), coordinated by the Italian ENEA, under the auspices of the Italian Ministry for Scientific and Technological Research. The parameters for the different campaign are: Summer 1989-90: in cooperation with the United States Geological Survey (USGS) the survey interested four different areas: the Scotia Plate, the Antarctic Peninsula, the South Pacific Ocean and the Ross Sea. The second part of the survey has been dedicated to the Pacific Margin of the Antarctic Peninsula, where 7 profiles have been collected for a total of about 1,550 km, by using the following parameters: Coverage 3000% Record Length 14 sec Sample Rate 4 ms Shot Interval 50 m Streamer Length 3000 m Streamer Depth 12 m Number of Groups 120 Group Interval 25 m Air-Guns: - Total Volume 45.16 1 - Pressure 140 bar - Depth 6 m During February and March 1992: The survey has been dedicated to three different areas where data have been collected with different sampling parameters. The first area of investigation interested the Hero Fracture Zone. In this area 16 lines have been acquired with "standard sampling parameters" for a total of 2607 km. The second area investigated during the survey is the Bransfield Strait. Due to moderate ice coverage and the particular conformation of the area, it was necessary to use a shorter streamer and a reduced airgun array. About 561 km of data along 6 lines have been recorded in this area. In the third area, on the Southern Margin of the Scotia Arc, 2 lines for a total amount of about 225 km have been acquired. In this area a deep crustal configuration for the streamer was used. This was the first test to use a very long streamer in Antarctic waters. The characteristic of data acquisition system were as follows: AREA1 AREA2 AREA3 (HERO FRACTURE ZONE) (BRANSFIELD STRAIT) (SCOTIA ARC) (62S, 69S, 61W, 79W) (62S, 64S, 57W, 63W) (60S, 62S, 50W, 52W) Coverage 3000 % 3800 % 4500 % Record Length 14 sec 7 sec 16 s Sample Rate 4 ms 4 ms 4 ms Shot Interval 50 m 25 m 50m Streamer Length 3000 m 1900 m 4500 m Streamer Depth 12 m 12 m 12 m Number of Groups 120 76 180 Group Interval 25 m 25 m 25 m Air-Guns - Total Volume 45.16 1 37,4 1 72 1 - Pressure 140 bar 140 bar 140 bar - Depth 6 m 6 m 6m Source Name:Research Vessel > OGS-Explora Sensor Name:ASTR1>Analogic streamer, Prakla Sensor Name:MSREC1>Multichannel seismic recorder,Sercel 358 Sensor Name:BGV2>Gravimetric Bodenseewerk, KSS31 Sensor Name:GMG1>Magnetometer Geometrics, G801-803
Purpose:
Not Available
Supplemental_Information:
REFERENCE: 1) Lodolo E., Camerlenghi A., Brancolini G. 1993: A bottom simulating reflector on the South Shetland margin,Antarctic Peninsula. Antarctic Science 5 (2); pp. 207-210. 2) Rebesco, M., Larter, R.D., Barker, P.F., Camerlenghi, A., and Vanneste, L.E., 1994. The history of sedimentation on the continental rise west of the Antarctic Peninsula. In ANTOSTRAT Symposium, Siena, Italy August 21-27 1994, Terra Antartica, vol. 1, n2, pp. 277-279. 3) Camerlenghi, A., Bohem, G., Della Vedova, B., Lodolo, G., Pellis, G., and Vesnaver, A., 1994. Seismic reflection tomography and thermal implications of a gas hydrate Bottom Simulating Reflector on the South Shetland Margin (Antarctic Peninsula). In ANTOSTRAT Symposium, Siena, Italy August 21-27 1994, Terra Antartica, vol. 1, n2, pp, 295-296.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19891101
Ending_Date: 19920330
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -100.0
East_Bounding_Coordinate: -55.0
North_Bounding_Coordinate: -60.0
South_Bounding_Coordinate: -69.0
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -79.0
East_Bounding_Coordinate: -71.0
North_Bounding_Coordinate: -62.0
South_Bounding_Coordinate: -69.0
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -63.0
East_Bounding_Coordinate: -57.0
North_Bounding_Coordinate: -62.0
South_Bounding_Coordinate: -64.0
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -52.0
East_Bounding_Coordinate: -50.0
North_Bounding_Coordinate: -60.0
South_Bounding_Coordinate: -62.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > MARINE GRAVITY FIELD
Theme_Keyword: EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > MARINE MAGNETICS
Theme_Keyword: EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > STRATIGRAPHIC SEQUENCE
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITATIONAL FIELD
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > SEISMIC PROFILE
Theme_Keyword: SHIPS
Theme_Keyword: GRAVIMETERS
Theme_Keyword: MAGNETOMETERS
Theme_Keyword: LONG STREAMERS
Theme_Keyword: SEISMIC REFLECTION PROFILERS
Theme_Keyword: PNRA > PROGRAMMA NAZIONALE DI RICERCHE IN ANTARTIDE
Theme_Keyword: Antarctic Peninsula
Theme_Keyword: Geophysics
Theme_Keyword: Seismic Survey
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: OCEANS
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > SOUTHERN OCEAN
Place_Keyword: OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN
Place_Keyword: OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN
Place_Keyword: CONTINENT > ANTARCTICA > ANTARCTIC PENINSULA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GIULIANO BRANCOLINI
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Osservatorio Geofisico Sperimentale (OGS)
Address: 34016 Sgonico - Trieste
Address: Borgo Grotta Gigante 42/C
City: Trieste
Country: Italy
Contact_Voice_Telephone: +39 40 21401
Contact_Facsimile_Telephone: +39 40 327307
Contact_Electronic_Mail_Address: gbrancolini@ogs.trieste.it
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The quality of data was evaluated onboard and after the processing and is good.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: IT/OGS > Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Italy
Contact_Person: GLORIA D'ADAMO
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Osservatorio Geofisico Sperimentale
Address: Po Box 2011
City: Trieste
Postal_Code: 34016
Country: Italy
Contact_Voice_Telephone: +40 2140285
Contact_Facsimile_Telephone: +40 327307
Contact_Electronic_Mail_Address: GLORIA@RSCC.OGS.TRIESTE.IT
Resource_Description: 89_90_ANTPE
Resource_Description: 91_92_ANTPE
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.ogs.trieste.it/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 19970611
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SERGIO PERSOGLIA
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Osservatorio Geofisico Sperimentale
Address: Po Box 2011
City: Trieste
Postal_Code: 34016
Country: ITALY
Contact_Voice_Telephone: +40 2140229
Contact_Facsimile_Telephone: +40 327307
Contact_Electronic_Mail_Address: PERSOGLIA@REDS.OGS.TRIESTE.IT
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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