[Parameters: Topic='SOLID EARTH', Term='GEOMAGNETISM']
Observatory Operations - Riometer and Magnetometer Data from the Australian Antarctic Territory and Riometer Data from Macquarie IslandEntry ID: ASAC_527
Abstract: An analogue data acquisition system (ADAS), designed to collect time-stamped, time series data from any analogue signal is currently used to log data from the riometer, magnetic pulsations and fluxgate magnetometers. Data collection is synchronised to a GPS (global positioning system) chronometer allowing data to be sampled with a time resolution of one millisecond, allowing accurate propagation ... delays to be estimated from data recorded at multiple sites.
A riometer is essentially a wide-angle radio telescope that is used for studying the aurora. It measures the combined signals at 30MHz of the radio stars in its wide (60 degree) vertically oriented beam.
The riometer data consists of 30 MHz signal relative intensities determined using a vertically oriented yagi dipole antenna at 10 second sample intervals. Only raw data are generally available. Calibration signals at ~1630UT include a 'zero' reference level.
This metadata record also incorporates data from ASAC project 22 (ASAC_22) - Observatory Operations: Riometers, and ASAC project 23 (ASAC_23) - Observatory Operations: All Sky Cameras.
To read the ADAS data format, special software must be downloaded and installed. This software is available for download from the url given below.
Magnetometer data are supplied in two formats. 1) raw data in ADAS format, and 2) processed data which can be viewed with a text editor. Processed data are held as 1 second averages. It is recommended that processed data be used. At the end of each processed data file, are further quality statements, and information on how to interpret the dataset. For more information on the procedure used to process the data, see ANARE Research Notes 146. The relevant chapter, chapter 30, is available for download at the url given below.
For magnetometer data from Macquarie Island or Mawson, please contact Geoscience Australia (www.ga.gov.au).
See also the World Data Centre at IPS Radio and Space Services (see the link below), for more finely processed data.
The fields in this dataset are:
X component - positive geographic North (horizontal)
Y component - positive geographic East (horizontal)
Z component - positive downwards (vertical)
Digital value signal of cosmic noise at 30 MHz
Data Set Citation
Dataset Originator/Creator: Morris, R.J., Burns, G. and Symons, L.
Dataset Title: Observatory Operations - Riometer and Magnetometer Data from the Australian Antarctic Territory and Riometer Data from Macquarie Island
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2005-12-01
Dataset Publisher: Australian Antarctic Data CentreOnline Resource: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD...
Start Date: 1987-10-11Stop Date: 2004-12-31
Temporal Resolution: 10 s
Only raw data (cosmic noise intensity, with zero levels marked in a sequence around 16:30UT) are available from this source.
See end of processed files for notes on reliability of data from each day.
Access Constraints Data are available for use in research activities provided consent of, and suitable reference to experiments and principal investigator is given.
Data stored in ADAS Format.
The data are publicly available for download from the provided URL. Data are available in a number of small download files, rather than one large file.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_527 when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 7 GB
Distribution Format: ADAS
Burns, G.B., McLoughlin, R. (1989), Routine observatory operations by the Australian Antarctic Division., Conde, M., Beggs, H. (ed.) ANARE Research Notes, 69, 189-192
Dilong, X., Burns, G.B. (1988), Riometer absorption morphology at Davis and Casey stations., ANARE Research Notes, 61, 33
Burns, G.B., Klekociuk, A.R. (1994), Davis and Casey magnetic field data., Morris, R.J. (ed.) ANARE Research Notes, 92, 17-41
Roberts, P.J., Burns, G.B., Morris, R.J. (2001), Davis and Casey magnetic field data - an Australian Antarctic Division review., Morris, R.J., Wilkinson, P.J. (ed.) ANARE Reports, 146, 421-468
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1999-10-07
Last DIF Revision Date: 2016-12-02