Eastern Australia’s submarine landslides: implications for tsunami hazard between Jervis Bay and Fraser Island

Clarke, Samantha; Hubble, Thomas; Miao, Guien; Airey, David; Ward, Steven N.

doi:10.1007/s10346-019-01223-6

Cited by 11 publications

(4 citation statements)

References 52 publications

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“…In Queensland, recent research (Clarke et al, 2019;Rigby, 2017;Mollison et al, 2020) reveals evidence of massive seafloor slumping along our coast in the geological past. It can happen again: Submarine landslides are present in water depths of approximately 400 to 3500m along the entire length of continental margin, but are increasingly prevalent northward of Coffs Harbour without clustering at any particular water depth.…”

Section: Introductionmentioning

confidence: 99%

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On a Fine Day in Shorncliffe the Sea Came Boiling Upwards Across the Bathers

Lynam¹

2020

The Proceedings of the Royal Society of Queensland

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Australia's historical scientific archives are open for investigation by citizen scientists, such as myself. They hold our unique primary scientific records, data and references, and they are found in universities, museums, state libraries and government agencies, national archives and on researchers' PCs. While our paper archives have recently been exposed to digitisation, modern digital scientific information is not being upgraded and collated into our modern digital knowledge-management 'data mining' global computational systems. I am writing this awareness article, flavoured with 40 years of seismological engagement and as a purposeful contribution in support of World Digital Preservation Day (22 November 2020), 'At Risk Digital Materials'. This paper establishes that Queensland has an incomplete 'public' history of local tsunami hazard occurrence. Further, it announces the discovery of a new meteotsunami meteorological hazard occurrence on 3 June 1917. By retrieving the various types of archived data, this paper questions and reflects on our society's lack of tsunami hazard preparedness, highlighting an obvious decline in scientific rigour in communicating such knowledge about our environment. This discussion of meteotsunamis illustrates the multivariate complexity of weather systems, with climate-change-related phenomena capable of creating coastal tsunami-like hazards commonly causally linked to undersea earthquakes and/or landslip or tectonic fault movement.

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Section: Introductionmentioning

confidence: 99%

“…Of these, 36 have been calculated to produce a tsunami flow depth equal to or greater than 5 m at the coastline for an assumed landslide downslope velocity of 20 ms~!. Landslides that are both thick (> 100 m) and wide (>5km) have the greatest potential to generate the largest coastal flow depths of (> 10m) (Clarke et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

On a Fine Day in Shorncliffe the Sea Came Boiling Upwards Across the Bathers

Lynam¹

2020

The Proceedings of the Royal Society of Queensland

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“…The 2018 tsunami underlines the need to align tsunami warning systems with local needs and characteristics. This is true in terms of risk profiles as tsunami can be triggered by earthquakes, volcanic eruptions or submarine landslides as researched in Indonesia and Australia (Brune et al 2010;Paris et al 2014;Puga-Bernabéu et al 2017;Clarke et al 2019). That alignment is also necessary in terms of disaster cultures.…”

Section: Introductionmentioning

confidence: 99%

Disaster cultures and the Indonesia Tsunami Early Warning System: (mis)alignments revealed by the 2018 non-tectonic tsunami in Labuan

Wicaksono,

Desportes,

Sopaheluwakan

2024

AJEM

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This study examined the (mis)alignments between multiple disaster cultures, the Indonesia Tsunami Early Warning System (InaTEWS) and local risk profiles as revealed by the 2018 non-tectonic tsunami triggered by the Anak Krakatau Volcanic eruption in Labuan. The research assessed to what extent the tsunami warning system was adapted to local needs and characteristics. Based on qualitative data collection, this study showed that before the 2018 tsunami (and notwithstanding memories of the 1883 Krakatau tsunami) different local groups shared a strikingly homogeneous understanding of tsunamis as exclusively triggered by earthquakes. After the 2018 tsunami, study participants reported increased awareness of different tsunami types and earthquake risks. However, this rarely translated into practical actions and changes at the local level as structural and cultural factors significantly hampered the work of local government and emergency management agencies. This research identified steps to improve alignment, for example by involving community members in warning technology maintenance, tailoring awareness-raising materials to local hazard profiles and connecting awareness-raising with local cultural traditions. However, a reform of the InaTEWS is necessary, including overcoming sectoral silos and incorporating local knowledge and experiences into policymaking. By addressing these (mis)alignments, authorities can better support communities to understand tsunami risks and respond to future event, ultimately enhancing preparedness.

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“…An increasing number of efforts has been made to compile databases of submarine landslides aimed to better understand their distribution and morphometry on marine settings around the world (Clare et al 2019). Regional compilations are available from the US Atlantic margin (ten Chaytor et al 2009;Twichell et al 2009), the Mediterranean Sea (Camerlenghi et al 2010;Migeon et al 2011;Urgeles and Camerlenghi 2013;Casalbore et al 2020), the Spanish margins (León et al 2020), Australia (Clarke et al 2019) or New Zealand (Watson et al 2020), to list a few examples. Global data compilations are also available to compare landslides on distinct continental margins of specific settings (Moscardelli and Wood 2016;ten Brink et al 2016;Blahůt et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Spatial and morphometric relationships of submarine landslides offshore west and southwest Iberia

Gamboa¹,

Omira²,

Terrinha³

2021

Preprint

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Submarine landslides are ubiquitous geohazards in marine environments occurring at multiple scales. Increasing efforts have been made to catalogue and categorise submarine landslides in comprehensive databases, aiming to better understand their preconditioning and trigger factors. Using the recently compiled, open-access MAGICLAND dataset, we investigate the distribution and morphometric trends of submarine landslides observed in seven distinct geomorphologic domains offshore west and southwest Iberia. In the study area, the higher densities of submarine landslides occur on the proximal southwest margin, with higher frequency nearby earthquake epicentre clusters recorded in the area. Submarine canyons are another major location for slope collapses, with a prevalence for their mouth regions. However, relevant numbers occur within all domains with important relief, including distal regions hundreds of kilometres away from the foot of the continental slope. Landslide size range is inversely proportional to their spacing and frequency within each domain, and within the whole study area. Relevant positive correlations were obtained between the parameters analysed, but relationships between unidimensional parameters such as length and width exhibit the lower correlation coefficient. Correlations of 2D and 3D parameters such as area and volume provide better results, aligning with prior observations. The relationships obtained are, however, variable across domains and the correlation values are influenced by the seafloor geomorphology. This work brings new insights on submarine landslide distribution in the understudied west and southwest Iberian continental margin, complements previous inventories made for nearby regions, and provides valuable data with wider applications for submarine landslide databases.

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Eastern Australia’s submarine landslides: implications for tsunami hazard between Jervis Bay and Fraser Island

Cited by 11 publications

References 52 publications

On a Fine Day in Shorncliffe the Sea Came Boiling Upwards Across the Bathers

On a Fine Day in Shorncliffe the Sea Came Boiling Upwards Across the Bathers

Disaster cultures and the Indonesia Tsunami Early Warning System: (mis)alignments revealed by the 2018 non-tectonic tsunami in Labuan

Spatial and morphometric relationships of submarine landslides offshore west and southwest Iberia

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