Multi-temporal SAR observations of the Surat Basin in Australia for deformation scenario evaluation associated with man-made interactions

Moghaddam, Negin Fouladi; Samsonov, Sergey; Rüdiger, Christoph; Walker, Jeffrey P.; Hall, Walter David Michael

doi:10.1007/s12665-015-4864-y

Cited by 8 publications

(8 citation statements)

References 38 publications

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“…Baseline subsidence monitoring efforts in the Surat Basin using ALOS PALSAR imagery between 2006 and 2011 have revealed conflicting results. [58] did not identify any large-scale pattern of ground displacement with a magnitude greater than 8 mm/yr, whereas [59] identified displacements coincident with CSG mining at rates of up to −28 mm/yr. Consequently, this region is now the site of a network of 40 radar corner reflectors to validate relative ground displacements recorded by InSAR (from Sentinel-1 data on both ascending and descending passes) with ground-based absolute displacement measurements made with GNSS [60].…”

Section: Coal Seam Gas Extractionmentioning

confidence: 99%

Applications of Satellite Radar Imagery for Hazard Monitoring: Insights from Australia

et al. 2021

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Earth observation (EO) satellites facilitate hazard monitoring and mapping over large-scale and remote areas. Despite Synthetic Aperture Radar (SAR) satellites being well-documented as a hazard monitoring tool, the uptake of these data is geographically variable, with the Australian continent being one example where the use of SAR data is limited. Consequently, less is known about how these data apply in the Australian context, how they could aid national hazard monitoring and assessment, and what new insights could be gleaned for the benefit of the international disaster risk reduction community. The European Space Agency Sentinel-1 satellite mission now provides the first spatially and temporally complete global SAR dataset and the first opportunity to use these data to systematically assess hazards in new locations. Using the example of Australia, where floods and uncontrolled bushfires, earthquakes, resource extraction (groundwater, mining, hydrocarbons) and geomorphological changes each pose potential risks to communities, we review past usage of EO for hazard monitoring and present a suite of new case studies that demonstrate the potential added benefits of SAR. The outcomes provide a baseline understanding of the potential role of SAR in national hazard monitoring and assessment in an Australian context. Future opportunities to improve national hazard identification will arise from: new SAR sensing capabilities, which for Australia includes a first-ever civilian EO capability, NovaSAR-1; the integration of Sentinel-1 SAR with other EO datasets; and the provision of standardised SAR products via Analysis Ready Data and Open Data Cubes to support operational applications.

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Section: Coal Seam Gas Extractionmentioning

confidence: 99%

Applications of Satellite Radar Imagery for Hazard Monitoring: Insights from Australia

et al. 2021

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“…The GWPZ of an area depends upon some factors that affect the recharge of aquifers such as LULC, slope, drainage density, soil condition, aspect, and lineament density (Shahid et al, 2000;Chandra et al, 2006;Yeh et al, 2009;Saravanan, 2012;Ndatuwong and Yadav, 2014;Moghaddam et al, 2016). The influencing parameters are analysed, and scores are assigned to the subclasses of parameter maps.…”

Section: Groundwater Potential Zone (Gwpz)mentioning

confidence: 99%

Delineation of Groundwater Potential Zone and Flood Risk Zone in Cachar District area,India

Ashwini¹,

Pathan²,

Sil³

2020

JWEAM

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Cachar district is one of the most populated districts of Assam, India. The region has been exposed to frequent catastrophic flood during monsoon which is responsible for sufferings of the community. The uncertain or shifting pattern of rain in recent times apart from usual monsoon has further escalated the woes of this area. The LOOK EAST POLICY and quest for the development of this part is causing rapid industrialisation and urbanisation, which demands an additional source of freshwater opposed to traditional demand in irrigation and other domestic needs in this region. This demand for freshwater is vertical in the graph and continuously rising. Consequently, the source of freshwater in the area is depleting and further mismanagement will be devastative for resources of water in the entire district. To satisfy the demand and to ensure sustainable development in the region, there is an urgent need for its conservation and management aimed to ameliorate water resources. With this idea behind the present investigation is to pinpoint flood risk zones as well as to demonstrate the variability in groundwater prospects in Cachar District, using geospatial technology. The study is based on thematic maps of Land Use/Land Cover (LULC), elevation, soil type, rainfall, lineament density, drainage density, slope, and aspect in a Geographical Information System (GIS) environment. The groundwater potential zone (hereinafter, GWPZ) areas have been classified into five zones, viz; Very low, Poor, Moderate, Good, and Very Good. About 74.37% of the total area comes under Moderate GWPZ. To identify Flood Risk areas, the whole district has been categorised into Very Low, Low, Moderate, High, and Very High, risk flood zones. About 50.47% of the total area of Cachar District has been found under Moderate flood risk zone. The study at hand may help decision-makers in identifying the GWPZ and earmarking High-Risk Flood Zones for the planning of integrated water resources management.

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“…Here, ALOS data spanning 14,000 km 2 were used to measure subsidence arising from open-cut mining and groundwater extraction and subsequently to assess the susceptibility of nearby coastal regions to sea-level rise [37]. Similarly, in the Surat Basin, Queensland (Figure 1), regional-scale InSAR reveals more than 20 mm/y of subsidence due to the extraction of coal bed methane and associated groundwater [38]. Monitoring of the Surat Basin includes a network of 40 corner reflectors installed by Geoscience Australia to tie relative ground displacements recorded by InSAR to GNSS [39] and also act as a calibration site for Sentinel-1 [26].…”

Section: Previous Use Of Insar Over Australiamentioning

confidence: 99%

“…Such increases in data coverage will aid in enabling wider application of InSAR to measure ground deformation driven by anthropogenic and geological/hydrogeological factors. Map showing the distribution of past peer-reviewed InSAR studies over Australia: longwall mining in New South Wales [32][33][34][35][36]; seismicity in Western Australia [30,31]; and regional-scale studies in the Gippsland Basin, Victoria [37] and the Surat Basin, Queensland [38]. Blue and green coloured regions show where, at the time of writing, more than 10 Sentinel-1A scenes have been acquired.…”

Section: Previous Use Of Insar Over Australiamentioning

confidence: 99%

First Results from Sentinel-1A InSAR over Australia: Application to the Perth Basin

2017

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Past ground-based geodetic measurements in the Perth Basin, Australia, record small-magnitude subsidence (up to 7 mm/y), but are limited to discrete points or traverses across parts of the metropolitan area. Here, we investigate deformation over a much larger region by performing the first application of Sentinel-1A InSAR data to Australia. The duration of the study is short (0.7 y), as dictated by the availability of Sentinel-1A data. Despite this limited observation period, verification of Sentinel-1A with continuous GPS and independent TerraSAR-X provides new insights into the deformation field of the Perth Basin. The displacements recorded by each satellite are in agreement, identifying broad (>5 km wide) areas of subsidence at rates up to 15 mm/y. Subsidence at rates greater than 20 mm/y over smaller regions (∼2 km wide) is coincident with wetland areas, where displacements are temporally correlated with changes in groundwater levels in the unconfined aquifer. Longer InSAR time series are required to determine whether these measured displacements are representative of long-term deformation or (more likely) seasonal variations. However, the agreement between datasets demonstrates the ability of Sentinel-1A to detect small-magnitude deformation over different spatial scales (from 2 km-10 s of km) in the Perth Basin. We suggest that, even over short time periods, these data are useful as a reconnaissance tool to identify regions for subsequent targeted studies, particularly given the large swath size of radar acquisitions, which facilitates analysis of a broader portion of the deformation field than ground-based methods or single scenes of TerraSAR-X.

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Multi-temporal SAR observations of the Surat Basin in Australia for deformation scenario evaluation associated with man-made interactions

Cited by 8 publications

References 38 publications

Applications of Satellite Radar Imagery for Hazard Monitoring: Insights from Australia

Applications of Satellite Radar Imagery for Hazard Monitoring: Insights from Australia

Delineation of Groundwater Potential Zone and Flood Risk Zone in Cachar District area,India

First Results from Sentinel-1A InSAR over Australia: Application to the Perth Basin

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