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WEGA (WilkEs basin GlAcial history) project

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: WEGA (WilkEs basin GlAcial history) project
Description:
Abstract:
WEGA is an international, multidisciplinary project, funded by the Italian PNRA and the Australian Antarctic Division (AAD). The data were collected during the January-March 2000 cruise aboard the R/V Tangaroa (NZ). The data are: 1827 km of high resolution, multi-channel, seismic reflection data, 3.5 kHz profiles, 562 km of chirp data, and a total of 11 gravity cores, 28 piston cores, 18 surface grabs and 11 short trigger cores. The water depth of the investigated area is between 100 and 3500 meters, from the inner continental shelf to the continental rise. The aim of the project is to reconstruct the Cenozoic evolution of the East Antarctic Ice Sheet, and of the bottom current production throughout the investigation of the sedimentary sequences deposited in the Wilkes Land continental margin between 68 degree South and 64 degree South of latitude and between 142 degree E and 146 degree E of longitude. Recording parameters of the WEGA reflection seismic multi-channel data: Source: 2X150 GI Airgun (6.8 liters) Streamer length: 600 m Hydroscience Technologies Recording: Geometrix 48-channels RX seismograph with 24-bit resolution Operating pressure: 2000 psi Number of Channels: 48 Sampling rate: 1 millisecond Group interval: 12.5 m Max record length: 7 seconds Shot interval: variable from 5 seconds (12.5 m at 5 knot survey speed) to 10 seconds (25 m at 5 knot survey speed) Number of phones per group: 16 Coverage: variable from 1000% to 2400% Field Filters: Low cut: 10 HZ -24 db/Oct High cut: 250 HZ – 70 db/Oct Processing parameters of the WEGA reflection seismic multi-channel data: Anti-alias filter and resample to 2 ms, Amplitude recovery, Apply gain recovery to compensate for spherical divergence and transmission loss. Sort data into CDP order and WB profile application. Normal move-out correction using velocity function. Derived from common distance gathers and mute scans. Stack 2400% Filter Time variant bandpass filter application. Sum of two adjacent traces.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: 1) Deep Sea Research Special Volume II, 50, Issues 8-9, (May 2003), Recent investigations of the Mertz Polynya and George Vth Land continental margin, East antartica Edited by P. Harris, G. Brancolini, N. Bindoff, L. DeSantis Elsevier Publ. The volume is a collection of geological, geophysical, glaciological, oceanographic and biological papers that show some of the results obtained in the frame of several projects, funded by United States (NSF), Australian (ANARE) and Italian (PNRA) Antarctic agencies. Eigth papers show in particular some results of the PNRA/ANARE WEGA (WilkEs basin GlAcial history) project.
Supplemental_Information:
REFERENCE: 2) Brancolini, G., Harris, P, 2000. Post Cruise Report AGSO Survey 217: Joint Italian/Australian Marine Geoscience Expedition Aboard the R.V. Tangaroa to the George Vth Land Region of East Antarctica during February-March, 2000. AGSO Record 2000/38, 180 pp.
Supplemental_Information:
REFERENCE: 3) Harris, P.T., Brancolini, G., Armand, L., Busetti, M., Beaman, R.J., Giorgetti, G., Presti, M., Trincardi, F., 2001. Continental shelf drift deposit indicates non-steady state Antarctic Bottom Water production in the Holocene. Marine Geology, 179: 1-8.
Supplemental_Information:
REFERENCE: 4) M. Presti, L. De Santis, G. Brancolini 2005. Continental shelf record of the East Antarctic Ice Sheet evolution: seismo-stratigraphic evidence from the George V Basin. Quaternary Science Reviews, Vol 24/10-11 pp 1223-1241 5) C. Escutia, L. De Santis, F. Donda, R.B. Dunbar, A.K. Cooper, G. Brancolini, S.L. Eittreim. 2005, Cenozoic Ice Sheet History from East Antarctic Wilkes Land continental margin sediments. In: Florindo, F., Harwood, D.M., Wilson, G.S. (Editors). Long-term changes in Southern high-latitude ice sheets and climate: the Cenozoic history. Global and Planetary Change 45, 51-81 6) Donda F., Caburlotto A., 2003. MOGAM-MOrphology and Geology of Antarctic Margins (Wilkes Land and Antarctic Peninsula). Rapporto sulla Campagna Antartica Estate Australe 2002-2003, XVIII Spedizione, ENEA-Progetto Antartide, 44-47.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000221
Ending_Date: 20000312
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 142.36655
East_Bounding_Coordinate: 145.6204
North_Bounding_Coordinate: -64.4117
South_Bounding_Coordinate: -67.15216
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > GLACIAL LANDFORMS
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > STRATIGRAPHIC SEQUENCE
Theme_Keyword: R/V TANGAROA
Theme_Keyword: Multichannel Seismic Reflection Data
Theme_Keyword: Subsurface Reflectivity
Theme_Keyword: NULL
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA > WILKES LAND
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: LAURA DE SANTIS
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Borgo Grotta Gigante 42/c
Address: Sgonico
City: Trieste
Postal_Code: I-34010
Country: Italy
Contact_Voice_Telephone: +39-040-2140358
Contact_Facsimile_Telephone: +39-040-327307
Contact_Electronic_Mail_Address: ldesantis@ogs.trieste.it
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
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: LAURA DE SANTIS
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Borgo Grotta Gigante 42/c
Address: Sgonico
City: Trieste
Postal_Code: I-34010
Country: Italy
Contact_Voice_Telephone: +39-040-2140358
Contact_Facsimile_Telephone: +39-040-327307
Contact_Electronic_Mail_Address: ldesantis@ogs.trieste.it
Resource_Description: WEGA_project
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SEG-Y
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:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://sdls.ogs.trieste.it/http://scar-sdls.org/
Access_Instructions:
Antarctic Seismic Data Library System (SDLS)
Fees: Free
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Metadata_Reference_Information:
Metadata_Date: 20080318
Metadata_Review_Date: 20160601
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
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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