Citation

Hutchinson, D.H. & Dawson, J.H., 2009. Satellite Radar Interferometry: Application to Rabaul Caldera, Papua New Guinea. Record  2009/039. Geoscience Australia, Canberra.

Abstract

Interferometric synthetic aperture radar (InSAR) is a geodetic monitoring tool used to measure ground deformations at cm-scale precision. InSAR has been used to study many geophysical phenomena, including volcanoes and earthquakes. This technique has yet to be applied widely in Papua New Guinea, despite its potential as a hazard monitoring tool for the numerous volcanoes in the region. This study applies InSAR to the Rabaul caldera, to investigate the feasibility of the technique in the region. This location was chosen so that the results of this study can be compared to ground based measurements provided by the Rabaul Volcano Observatory. Of the 10 radar images acquired for this study, 7 were successfully processed to form interferograms. These interferograms were then stacked together to form a time series of deformations, spanning a 14 month period from 27-2-2007 to 16-4-2008. Most of these interferograms had high coherence, and relatively low noise, and cm-scale deformations evident in the deformation time series. These results suggest that this technique is capable of detecting precursory uplift before an eruption. The primary limitations to the analysis were the availability of radar data, and the baseline separation between acquisitions. We were unable to apply temporal filtering to remove atmospheric noise, since there were too few points in the time series.
Google map showing geographic bounding box with values North bound -4.15 East bound 152.01667 West bound 152.05 South bound -4.35
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Product Type/Sub Type

dataset - GA Publication - Record

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2009

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Record
remote sensing
geodesy
volcanology
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-4.15
East bound
152.01667
West bound
152.05
South bound
-4.35

Lineage

Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-ecc8-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2009-07-15

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays