Magnetotelluric surveys of the AusLAMP Musgraves Province within the Northern Territory, 2016 to 2018 (GSSA Level 2 EDI transfer functions)

Brief description

This record was harvested by RDA at 2025-04-18T16:34:30.411+10:00 from NCI's Data Catalogue where it was last modified at 2023-03-16.

Full description

AusLAMP Level 2 magnetotelluric transfer functions calculated from sites in the Musgraves Province within the Northern Territory are presented in the Electrical Data Interchange (EDI) file format (Wight, 1987). A description of this data and derived models can be found in Thiel et al., 2020. These EDI files have been extracted from the Geological Survey of South Australia (GSSA) AusLAMP South Australia dataset hosted in the SARIG portal (GSSA, 2019) and mirrored at NCI. The raw electromagnetic time series data were processed by the GSSA, The University of Adelaide and OPM Consulting Pty Ltd. For most EDI files, the transfer functions presented are the magnetotelluric impedance tensor and vertical field transfer functions (Tipper). This data can be used as input for subsequent magnetotelluric inversion and interpretation. References: Geological Survey of South Australia (GSSA) (2019). SA Geodata Database - Electrical Techniques, GSSA SARIG Portal, Available at: https://minerals.sarig.sa.gov.au/ElectricalTechnique.aspx?SURVEY_NO=ET_SURVEY_NO&surveyName=AusLAMP%20South%20Australia Thiel, S., Goleby, B.R., Pawley, M.J. et al. (2020). AusLAMP 3D MT imaging of an intracontinental deformation zone, Musgrave Province, Central Australia. Earth Planets Space 72, 98. https://doi.org/10.1186/s40623-020-01223-0 Wight, D.E. (1987). Society of Exploration Geophysicists MT/EMAP Data Interchange Standard.

Credit

The Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) project is a collaboration between Geoscience Australia, the Geological Surveys of each State and the Northern Territory, AuScope, universities, and other research organisations (https://www.ga.gov.au/about/projects/resources/auslamp).

The Geophysics 2030 project received co-investment from AuScope and the Australian Research Data Commons (ARDC) to support the data curation at the National Computational Infrastructure (NCI Australia) (https://doi.org/10.47486/XN002). AuScope, the ARDC and NCI Australia are enabled by the National Collaborative Research Infrastructure Strategy (NCRIS).

Lineage

The processing software used to estimate the transfer functions from the raw electromagnetic time series data was the Bounded Influence Remote Reference Processing (BIRRP) code of Chave and Thomson (2003; 2004). The MTpy software (Krieger and Peacock, 2004; Kirkby et al., 2019) was used to convert the BIRRP outputs to EDI files. NCI is mirroring the data available via the GSSA SARIG Catalogue: https://catalog.sarig.sa.gov.au/geonetwork/srv/eng/catalog.search#/metadata/f3d8cf6d-407a-4057-b81b-27f7025be135 References: Chave, A.D. and Thomson, D.J., 2003. A bounded influence regression estimator based on the statistics of the hat matrix. Journal of the Royal Statistical Society: Series C (Applied Statistics), 52(3), pp.307-322, https://doi.org/10.1111/1467-9876.00406 Chave, A.D. and Thomson, D.J., 2004. Bounded influence estimation of magnetotelluric response functions. Geophys. J. Int, 157(3), pp.988-1006. https://doi.org/10.1111/j.1365-246X.2004.02203.x Kirkby, A.L., Zhang, F., Peacock, J., Hassan, R. and Duan, J., 2019. The MTPy software package for magnetotelluric data analysis and visualisation. Journal of Open Source Software, 4(37), p.1358. https://doi.org/10.21105/joss.01358 Krieger, L and Peacock, J.R., 2014, MTpy: A Python toolbox for magnetotellurics. Computers & geosciences, 72, 167 - 175. https://doi.org/10.1016/j.cageo.2014.07.013