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4. TOMODEC_2005_MAGNETIC-SPAIN

Description

In January 2005 a multi-parametric international experiment was conducted that encompassed both Deception Island and its surrounding waters. This experiment used as main platforms the Spanish Oceanographic vessel 'Hesperides', the Spanish Scientific Antarctic base 'Gabriel de Castilla' at Deception Island and four temporary camps deployed on the volcanic island. This experiment allowed us to record active seismic signals on a large network of seismic stations that were deployed both on land and on the seafloor. In addition other geophysical data were acquired, such as: bathymetric high precision multi-beam data, and gravimetric and magnetic profiles.
The magnetometer SeaSPY is an acquisition system from the Company Marine Magnetics with a very sensitive and omnidirectional Overhauser sensor. This sensor allows measurement of the total magnetic field and was stable in time during the survey period. This system has a high-precision clock (1 ppm) and it can be synchronized with the onboard GPS clock. This equipment is thermally stabilized permitting it to operate in all type of sea waters, including Antarctic waters, and due to its design there are no heading errors. In table 4 we summarize its technical characteristics. The magnetometer was used during the first phase of shooting outside of Post Foster. However, its 200 m long tow cable precluded its use inside the Deception Island inner bay.

Purpose

To obtain magnetic data during the experiment.

Quality

The magnetometer is regularly calibrated by the manufacturer, but periodically before every field survey is calibrated in the starting harbor to avoid potential shifts.

Access

These data are publicly available for download from the provided URL.

Temporal Coverages

• Start date: 2005-01-04 - Stop date: 2005-01-25

Spatial Coverages

Science Keywords

• EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > MARINE MAGNETICS

Use Constraints

These data are associated to the manuscript submitted to the journal Nature Scientific Data under the title:
Ibanez, J.M., Diaz-Moreno, A., Prudencio, J., Zandomeneghi, D., Wilcock, W., Barclay, A., Almendros, J., Benitez, C., Garcia-Yeguas, C. and Alguacil, G., (2017). A multi-parametric geophysical data base at Deception Island (Antarctica) obtained in the TOMO-DEC experiment. Nature Scientific Data, submitted.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=TOMODEC_2005_MAGNETIC-SPAIN when using these data.