European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Seismic reflection and refraction, magnetic, gravimetric survey of Ross Sea, Antarctica (1988-89)

Data holding centreOGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
CountryItaly  Italy
Time periodFrom 1988 to 1989
OngoingNo
Geographical area

4,202 km on 24 lines of seismic, gravimetric and magnetometric surveys of Ross Sea area

Observations 
Parameters

Gravity; Seismic reflection

Instruments

Multi-channel seismic reflection systems; seismic refraction systems; gravimeters; satellite positioning systems

Description 
Summary

During the austral summer 1988-89, the Osservatorio Geofisico Sperimentale (OGS) conducted the second geophysical survey in Antarctica collecting magnetic, gravimetric, seismic reflection and refraction data in the South Pacific Ocean and in the Ross Sea areas. The second part of the survey has been dedicated to the Ross Sea, where the dataset has been complemented with seismic refraction profiles by means of sonobuoys, in cooperation with the United States Geological Survey (USGS). During this survey a total amount of 4202 km of seismic reflection profiles, and 17 refraction datasets have been acquired. The research has been sponsored by the National Research Program in Antarctica (PNRA), headed by the Italian ENEA. 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

OriginatorsOGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
Data web sitehttp://www.ogs.trieste.it/pnra/UO/uo.html
Availability 
OrganisationOGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
AvailabilityBy negotiation
ContactDepartment Director (Department Director)
Address

OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
Borgo Grotta Gigante 42/c
Sgonico (Trieste),

34010
Italy

Administration 
Collating centreOGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Oceanography
Local identifierOGS-EDMED-189
Global identifier3785
Last revised1993-06-03