European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Seismic reflection, magnetic, gravimetric survey of Ross Sea, Antarctica (1987-88)

Data holding centreOGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Geophysics
CountryItaly  Italy
Time periodFrom 1987 to 1988
OngoingNo
Geographical area

2,323 km on 6 lines of seismic reflection, 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 1987-88, the Osservatorio Geofisico Sperimentale conducted a geophysical survey in the Ross Sea, collecting magnetic, gravimetric and seismic data. This research has been carried out in the framework of the National Research Program in Antarctica (PNRA), coordinated by the Italian ENEA, under the auspices of the Italian Ministry for Scientific and Technological Research. Making use of the Research Vessel OGS-Explora, a total amount of 2,323 km of multi-channel seismic lines were collected in the period from 25th January to 8th March, 1988. One of the seismic lines has been recorded at 4 ms sampling rate, shooting every 75 m and recording over 24 seconds, to obtain information on the deepest layers of the Earth's crust. The data have been obtained with the following sampling parameters: Coverage = 2400 % Sample Rate = 2 ms Shot Interval = 50 m Streamer Length = 2400 m Streamer Depth = 12 m Group Interval = 25 m Number of Groups = 96 Record Length = 12 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/index.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-188
Global identifier3786
Last revised1993-06-03