Southern Ocean Magnetometer Experiment (SOMEx)Entry ID: ASAC_852
Abstract: The SOMEx (Southern Ocean Magnetometer Experiment) experiment deployed four seafloor magnetomoeters in 1996, to measure changing magnetic fields on the floor of the southern ocean. Two were recovered in 1997 (neither of these had recorded data correctly) and two were recovered in 1998 (both of these had recorded good data).
Procedures for separating the three factors of ionospheric ... signal, oceanic signal, and seafloor electrical conductivity, and obtaining information on the ocean current flow is the work in progress.
These notes are written 26 May 04 by F.E.M.(Ted) Lilley regarding the Southern Ocean Magnetometer Experiment (SOMEx) of 1996.
The main document to refer to is the published paper; Lilley, F.E.M., White, A., Heinson, G.S. and Procko, K. 2004 'Seeking a seafloor magnetic signal from the Antarctic circumpolar current' Geophysical Journal International volume 157 pages 175-186.
An electronic version of this paper (Lilley et al. 2004) is gji2174.pdf
Of the great deal of computational material on which Lilley et al. (2004) is based, the most important and basic is regarded as being the data displayed in Figures 4 and 5.
Figures 4 and 5 are both produced using the matlab program ph.m which calls a file 'head'. 'head' is taken as head7A for Figure 4 (Girardin), and head7D for Figure 5 (Rossel). Reference to ph.m will explain much about the composition of the head files.
However Figures 4 and 5 do not use all the recorded magnetic data. To call all magnetic data, use program pd.m, which calls a file 'data'. 'data' is taken as data7A for site Girardin, and data7D for site Rossel. Again, reference to pd.m will explain much about the composition of the data files.
In addition, a collection of notes made by Lilley while working on Lilley et al. (2004) is also included, as readme_lilleynotes.
Start Date: 1996-06-01Stop Date: 1996-12-01
SOLID EARTH > GEOMAGNETISM > ELECTRICAL FIELD
SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD > GEOMAGNETIC INDUCTION
SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD > MAGNETIC DECLINATION
SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD
SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD > MAGNETIC INCLINATION
SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD > MAGNETIC INTENSITY
ISO Topic Category
Access Constraints See the technical contact Frederick Lilley for details.
The data are available for download from the provided URL.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at the provided URL when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 8024 kb
Distribution Format: matlab, UNIX, PDF
Distribution Media: HTTP
Distribution Size: 9 MB
Distribution Format: pdf
Role: TECHNICAL CONTACT
Phone: +61 2 6249 3406
Fax: +61 2 6249 0738
Email: Ted.Lilley at anu.edu.au
Australian National University R'SRCH SCHOOL OF EARTH SCIENCES
Province or State: ACT
Postal Code: 2600
Email: antony.white at flinders.edu.au
Flinders University School of Chemistry, Physics and Earth Sciencs
Province or State: South Australia
Postal Code: 5001
Role: DIF AUTHOR
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: dave.connell at aad.gov.au
Australian Antarctic Division 203 Channel Highway
Province or State: Tasmania
Postal Code: 7050
Lilley, F.E.M. and White, A. (1997) Information on ocean current flow from sea floor magnetic measurements, abstract IP1K on page IP1-3 of 1997 joint assemblies of IAMAS and IAPSO, Melbourne Australia.
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Creation and Review Dates
DIF Creation Date: 2000-08-08
Last DIF Revision Date: 2014-01-10