Data

Ground Penetrating Radar (GPR) Data - Adelaide Metropolitan Beaches Survey

Geoscience Australia
Howard, F.J.F. ; McPherson, A.A.
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/100226&rft.title=Ground Penetrating Radar (GPR) Data - Adelaide Metropolitan Beaches Survey&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/100226&rft.description=This record contains processed and topographically corrected Ground Penetrating Radar (GPR) data (.segy, .bmp), and a summary shapefile collected on fieldwork at Adelaide Metropolitan Beaches, South Australia for the Bushfire and Natural Hazards CRC Project, Resilience to Clustered Disaster Events on the Coast - Storm Surge. The data was collected from 16-19 February 2015 using a MALA ProEx GPR system with a 250 MHz shielded antennae. The aim of the field work was to identify and define a minimum thickness for the beach and dune systems, and where possible depth to any identifiable competent substrate (e.g. bedrock) or pre-Holocene surface which may influence the erosion potential of incident wave energy. Surface elevation data was co-acquired and used to topographically correct the GPR profiles. This dataset is published with the permission of the CEO, Geoscience Australia.Maintenance and Update Frequency: notPlannedStatement: Data was collected between the 16-19 February 2015 using a MALA GPR system with a 250 MHz shielded antennae. GPR survey lines and elevations were co-acquired using a NovAtel SMART6-L Global Positioning System (GPS) receiver that recorded location measurements at one per 4 seconds or better. Due to the inherent inaccuracy introduced by the backpack GPS receiver setup, and the resultant inability to maintain a consistent distance or height with respect to the antenna, differential correction of GPS measurements was not attempted. Accordingly all elevation and location coordinates are relative. The raw data was processed and converted to SEGY format using RadExplorer(TM) software (Geomatrix Earth Science Ltd). Processing involved the following processing flow and settings. 1. DC removal: Start Time - 130; End Time - 162; Mode - Mean 2. Time zero adjustment: Manual - selected the first return 3. Background removal: Normal - The fifth weakest option 4. 2D Spatial filtering: Filter Type - 2D Mean; Number of Traces - 3; Number of Samples - 2; Filter Mode - Normal 5. Amplitude correction: AGC; Operator Length (ns) - 50; AGC Scalar - Mean; Scalar Application - Leading 6. Bandpass filtering: Low Cut - 71 MHz; Low Pass - 135 MHz; High Pass - 378 MHz; High Cut - 750 MHz 7. Topographic correction: elevation correction using the associated .cor file to account for surface topographic variation 8. Trace Edit: Where topographic correction was noisy, some individual traces were erased to smooth the profile&rft.creator=Howard, F.J.F. &rft.creator=McPherson, A.A. &rft.date=2015&rft.coverage=westlimit=138.45; southlimit=-35.06; eastlimit=138.54; northlimit=-34.77&rft.coverage=westlimit=138.45; southlimit=-35.06; eastlimit=138.54; northlimit=-34.77&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=GPR&rft_subject=coasts&rft_subject=erosion&rft_subject=geophysics&rft_subject=geomorphology&rft_subject=South Australia&rft_subject=Earth Sciences&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data

Licence & Rights:

Open Licence view details
CC-BY

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

https://www.protectivesecurity.gov.au/Pages/default.aspx

WWW:LINK-1.0-http--link

Access:

Open

Contact Information

clientservices@ga.gov.au

Brief description

This record contains processed and topographically corrected Ground Penetrating Radar (GPR) data (.segy, .bmp), and a summary shapefile collected on fieldwork at Adelaide Metropolitan Beaches, South Australia for the Bushfire and Natural Hazards CRC Project, Resilience to Clustered Disaster Events on the Coast - Storm Surge. The data was collected from 16-19 February 2015 using a MALA ProEx GPR system with a 250 MHz shielded antennae. The aim of the field work was to identify and define a minimum thickness for the beach and dune systems, and where possible depth to any identifiable competent substrate (e.g. bedrock) or pre-Holocene surface which may influence the erosion potential of incident wave energy. Surface elevation data was co-acquired and used to topographically correct the GPR profiles. This dataset is published with the permission of the CEO, Geoscience Australia.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: Data was collected between the 16-19 February 2015 using a MALA GPR system with a 250 MHz shielded antennae.

GPR survey lines and elevations were co-acquired using a NovAtel SMART6-L Global Positioning System (GPS) receiver that recorded location measurements at one per 4 seconds or better. Due to the inherent inaccuracy introduced by the backpack GPS receiver setup, and the resultant inability to maintain a consistent distance or height with respect to the antenna, differential correction of GPS measurements was not attempted. Accordingly all elevation and location coordinates are relative.

The raw data was processed and converted to SEGY format using RadExplorer(TM) software (Geomatrix Earth Science Ltd). Processing involved the following processing flow and settings.

1. DC removal: Start Time - 130; End Time - 162; Mode - Mean
2. Time zero adjustment: Manual - selected the first return
3. Background removal: Normal - The fifth weakest option
4. 2D Spatial filtering: Filter Type - 2D Mean; Number of Traces - 3; Number of Samples - 2; Filter Mode - Normal
5. Amplitude correction: AGC; Operator Length (ns) - 50; AGC Scalar - Mean; Scalar Application - Leading
6. Bandpass filtering: Low Cut - 71 MHz; Low Pass - 135 MHz; High Pass - 378 MHz; High Cut - 750 MHz
7. Topographic correction: elevation correction using the associated .cor file to account for surface topographic variation
8. Trace Edit: Where topographic correction was noisy, some individual traces were erased to smooth the profile

Created: 16 02 2015

Issued: 17 08 2016

Modified: 08 04 2019

Data time period: 2015-02-16

This dataset is part of a larger collection

Click to explore relationships graph

138.54,-34.77 138.54,-35.06 138.45,-35.06 138.45,-34.77 138.54,-34.77

138.495,-34.915

text: westlimit=138.45; southlimit=-35.06; eastlimit=138.54; northlimit=-34.77

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Other Information
Link to a PDF poster summarising the objectives and aims of the project that funded the GPR data collection. (Related link: Resilience to Clustered Disaster Events on the Coast - Poster)

uri : http://bnhcrc.com.au/sites/default/files/managed/downloads/s._nichol_a._mcpherson_f._howard_d.moore_.pdf

Link to the Bushfire and Natural Hazard CRC's page summarising the objectives and aims of the project that funded the GPR data collection. (Related link: Resilience to Clustered Disaster Events on the Coast - Storm Surge)

uri : http://bnhcrc.com.au/research/bushfire-and-natural-hazard-risks/254

Home page of MALA Geosciences (Related link: MALA Geosciences Home Page)

uri : http://www.malags.com/home

Download the data (bmp)

uri : https://d28rz98at9flks.cloudfront.net/100226/100226_BMP.zip

Download the data (shp)

uri : https://d28rz98at9flks.cloudfront.net/100226/100226_GIS.zip

Download the data (segy)

uri : https://d28rz98at9flks.cloudfront.net/100226/100226_SEGY.zip

Identifiers