EDMED Details

General

Dataset Name: Seismic reflection, magnetic and gravimetric survey of the Antarctic Peninsula (1989-90)
Data Holding Centre: OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
Time Period: from November 1989 to January 1990
Start Date: 1989-01-01
End Date: 1990-12-31
Project

Geocoverage: 4,202 km on 24 lines of seismic reflection, gravimetric and magnetometric survey of Antarctic Peninsula: Weddell Sea, Drake Passage, Amundsen and Bellingshausen Sea areas
Geographic Box (south,north,west,east): -70, -90, 0, -60
Sea Area: Southern Ocean

Parameters: Gravity; Seismic reflection; Magnetics
Instruments: multi-channel seismic reflection systems; magnetometers; seismic refraction systems; gravimeters; satellite positioning systems

Summary: PNRA (Italian Research Programme in Antarctica) - During the austral summer 1989-90 and in the framework of the Italian National Research Program in Antarctica coordinated by ENEA, the third geophysical survey was conducted in the waters surrounding Antarctica, with the systematic collection of seismic reflection, gravity and magnetic data. Some seismic refraction profiles have also been carried out in cooperation with the United States Geological Survey (USGS). The survey was conducted in three different areas: the Antarctic Peninsula, the South Pacific Ocean and the Ross Sea. The first part of the survey has been dedicated to the Antarctic Peninsula area (Weddell Sea, Drake Passage, Amundsen and Bellingshausen Seas), where 4,202 km of profiles have been collected. The data have been collected with the following sampling parameters: Coverage = 3000 % Sample Rate = 4 ms Shot Interval = 50 m Streamer Length = 3000 m Streamer Depth = 12 m Group Interval = 25 m Number of Groups = 120 Record Length = 14 sec Air-Guns: - Total Volume = 45.16 l - Pressure = 140 bar - Depth = 6 m
Originator: OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
References

Availability: by negotiation
Organization: OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
Contact: unknown
Address: OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics; Sgonico (Trieste),; 34010; Italy; webmaster@ogs.trieste.it; http://www.ogs.trieste.it