A5091644653- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- High-pressure geophysics and materials
- Tropical and Extratropical Cyclones Research
- Coastal and Marine Dynamics
- Geological and Geophysical Studies
- Geophysics and Gravity Measurements
- Geological and Geochemical Analysis
- Nuclear and radioactivity studies
- Landslides and related hazards
- Coastal wetland ecosystem dynamics
- Ocean Waves and Remote Sensing
- Soil and Unsaturated Flow
- Soil Geostatistics and Mapping
- Coastal and Marine Management
- Evacuation and Crowd Dynamics
- Cryospheric studies and observations
- Offshore Engineering and Technologies
- Advanced Data Compression Techniques
- Hydraulic flow and structures
- Oil Spill Detection and Mitigation
- Aeolian processes and effects
- Seismic Imaging and Inversion Techniques
- Global Financial Crisis and Policies
Geoscience Australia
2015-2025
Universidad de Málaga
2024
Environmental Earth Sciences
2014
UNSW Sydney
2014
Culture Resource
1995
Abstract Applying probabilistic methods to infrequent but devastating natural events is intrinsically challenging. For tsunami analyses, a suite of geophysical assessments should be in principle evaluated because the different causes generating tsunamis (earthquakes, landslides, volcanic activity, meteorological events, and asteroid impacts) with varying mean recurrence rates. Probabilistic Tsunami Hazard Analyses (PTHAs) are conducted areas world at global, regional, local scales aim...
The NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of North-eastern Atlantic, Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as three-phase project. first two phases were dedicated to development calculations, following formalized decision-making process based on multiple-expert protocol. third phase documentation dissemination. assessment workflow structured in Steps Levels. There...
Abstract Large tsunamis occur infrequently but have the capacity to cause enormous numbers of casualties, damage built environment and critical infrastructure, economic losses. A sound understanding tsunami hazard is required underpin management these risks, while assessments are typically conducted at regional or local scales, globally consistent support international disaster risk reduction efforts, can serve as a reference for studies. This study presents global-scale probabilistic...
The complexity of coseismic slip distributions influences the tsunami hazard posed by local and, to a certain extent, distant sources. Large concentrated in shallow patches was observed recent tsunamigenic earthquakes, possibly due dynamic amplification near free surface, variable frictional conditions or other factors. We propose method for incorporating enhanced subduction earthquakes while preventing systematic excess at depths over one more seismic cycles. uses classic k−2 stochastic...
This study tests three models for generating stochastic earthquake-tsunami scenarios on subduction zones by comparison with deep ocean observations from 18 tsunamis during the period 2006–2016. It focusses capacity of uncalibrated to generate a realistic distribution hypothetical tsunamis, assuming earthquake location, magnitude and interface geometry are approximately known, while details rupture area slip unknown. Modelling problems like this arise in tsunami hazard assessment, when using...
Probabilistic Tsunami Hazard Assessment (PTHA) often proceeds by constructing a suite of hypothetical earthquake scenarios, and modelling their tsunamis occurrence-rates. Both tsunami occurrence-rate models are affected the representation slip rigidity, but overall importance these factors for far-field PTHA is unclear. We study sensitivity an Australia-wide to six different scenario representations, including two rigidity (constant depth-varying) combined with three models:...
Abstract This study investigates whether eight different synthetic finite fault models (SFFM) can simulate stochastic earthquake‐tsunami with similar statistical properties to “real” events, where the latter are represented using heterogeneous slip distributions from 66 Finite Fault Inversions (FFI) for oceanic subduction interface earthquakes. A new method is derived estimate SFFM parameters FFI, and predictive relations between earthquake moment magnitude corner wave numbers developed...
Summary Site-specific Probabilistic Tsunami Hazard Assessment (PTHA) is a powerful tool for coastal planning against tsunami risk. However, its typically high computational demands led to the introduction of Monte Carlo Stratified Importance Sampling (SIS) approach, which selects representative subset scenarios numerical inundation simulations. We here empirically validate this sampling first time our knowledge, using an existing extensive dataset simulations two sites in Mediterranean Sea...
Abstract Agriculture in the semi‐arid and arid areas of world requires irrigation. However, these areas, soils naturally contain large amounts sodium (sodic) which can cause amongst other things, surface crusting on topsoil or structural instability subsoil. The exchangeable percentage (ESP) needs to be mapped guide application gypsum. Whilst geostatistical techniques, such as ordinary, co‐ 3‐D kriging have been used, they often criticized because are unable take into account soil knowledge...
Abstract Tsunami hazard maps are generated for the coastline of Mentawai Islands, West Sumatra, Indonesia, to support evacuation and disaster response planning. A random heterogeneous slip generator is used forward model a suite earthquake rupture scenarios on Segment Sunda Subduction Zone. Up 1000 models that fit constraints provided by coral geodetic records coseismic vertical deformation from major earthquakes in 1797, 1833 2007 inundation define maximum zone envelopes all these...
Offshore Probabilistic Tsunami Hazard Assessments (offshore PTHAs) provide large-scale analyses of earthquake-tsunami frequencies and uncertainties in the deep ocean, but do not high-resolution onshore tsunami hazard information as required for many risk-management applications. To understand implications an offshore PTHA at any site, principle inundation should be simulated locally every earthquake scenario PTHA. In practice this is rarely feasible due to computational expense models, large...
Abstract On January 15, 2022, an ongoing eruption at the Hunga-Tonga Hunga-Ha’apai volcano generated a large explosion which resulted in globally observed tsunami and atmospheric pressure wave. This paper presents time series observations of event from Australia including 503 mean sea level (MSLP) sensors 103 tide gauges. Data is provided its original format, varies between data providers, post-processed format with consistent file structure zone. High-pass filtered variants are also to...
Site-specific Probabilistic Tsunami Hazard Assessment (PTHA) is a powerful tool for coastal planning against tsunami risk. However, its typically high computational demands led to the introduction of Monte Carlo Stratified Importance Sampling (SIS) approach, which selects representative subset scenarios numerical inundation simulations. We here empirically validate this sampling first time our knowledge, using an existing extensive dataset simulations two sites in Mediterranean Sea (Catania...
Abstract Rising sea levels, owing to climate change, are a threat fresh water coastal aquifers. This is because saline intrusions caused by increases and intensification of medium‐large scale influences including level rise, wave climate, tidal cycles, shifts in beach morphology. Methods therefore required understand the dynamics these interactions. While traditional borehole galvanic contact resistivity ( GCR ) techniques have been successful they time‐consuming. Alternatively,...
At far-field coasts the largest tsunami waves may occur many hours post-arrival, and hazardous persist for more than one day. Such tsunamis are often simulated by nesting high-resolution nonlinear shallow water models (covering sites of interest) within low-resolution reduced-physics global-scale (to efficiently simulate propagation). These global ignore friction mathematically energy conservative, so in theory modelled will indefinitely. In contrast, real exhibit slow dissipation at with an...
Nichol, S.L.; McPherson, A., Davies, G., Jiang, W., Howard, F., Baldock, T., Callaghan, D., and Gravois, U., 2016. A framework for modelling shoreline response to clustered storm events: case study from southeast Australia. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal Research, Special Issue, No. 75, pp. 1197 - 1201. Coconut Creek (Florida), ISSN 0749-0208.An overview a events is...
In order to reliably assess tsunami hazard in eastern Indonesia, we need understand how historical events were generated. Here consider two such events: the 1674 Ambon and 1992 Flores tsunamis. Firstly, Island suffered a devastating earthquake that generated with 100 m run-up height on north coast of island 1674. However, there is no known active fault around capable generating gigantic wave. Rumphius' report describes initial wave was coming from three villages collapsed immediately after...