2020
DOI: 10.3390/min10090731
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Exploring Offshore Sediment Evidence of the 1755 CE Tsunami (Faro, Portugal): Implications for the Study of Outer Shelf Tsunami Deposits

Abstract: Outer shelf sedimentary records are promising for determining the recurrence intervals of tsunamis. However, compared to onshore deposits, offshore deposits are more difficult to access, and so far, studies of outer shelf tsunami deposits are scarce. Here, an example of studying these deposits is presented to infer implications for tsunami-related signatures in similar environments and potentially contribute to pre-historic tsunami event detections. A multidisciplinary approach was performed to detect the sedi… Show more

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Cited by 7 publications
(3 citation statements)
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References 99 publications
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“…Thus, it is possible that the quartz grains analysed already held chemical imprints which supports the lack of microtextural heterogeneity in core GeoB23513-02. Di culties in recognising microtextural signatures related to tsunami events were reported in Kümmerer et al (2020), who investigated sediments from the 1755 CE tsunami on the southern Portuguese continental shelf, the in the vicinity of Faro. The authors detected only a small increase in percussion marks, and that a possible change in general sedimentation after the 1755 CE event may have in uenced the signature in the outer shelf sedimentary record.…”
Section: Microtextural Analysismentioning
confidence: 99%
“…Thus, it is possible that the quartz grains analysed already held chemical imprints which supports the lack of microtextural heterogeneity in core GeoB23513-02. Di culties in recognising microtextural signatures related to tsunami events were reported in Kümmerer et al (2020), who investigated sediments from the 1755 CE tsunami on the southern Portuguese continental shelf, the in the vicinity of Faro. The authors detected only a small increase in percussion marks, and that a possible change in general sedimentation after the 1755 CE event may have in uenced the signature in the outer shelf sedimentary record.…”
Section: Microtextural Analysismentioning
confidence: 99%
“…Nevertheless, there have been a few studies dealing with backwash deposits associated with the 2004 tsunami (e.g., Sakuna et al, 2012;Sakuna-Schwartz et al, 2015), while the 2011 event led to an increased number of studies of offshore deposits and related processes (e.g., Ikehara et al, 2014Ikehara et al, , 2016Ikehara et al, , 2020Ikehara et al, , 2021Tamura et al, 2015;Yoshikawa et al, 2015;Seike et al, 2016). Recent investigations have also been made of backwash deposits associated with historical and prehistorical events (e.g., Kümmerer et al, 2020;Smedile et al, 2020;Feist et al, 2023).…”
Section: Introductionmentioning
confidence: 99%
“…Studies that date successive sequences of extensive tsunami sand sheets in Alaska, Chile, Japan, Russia and New Zealand have contributed important understanding of the location of frequency of subduction zone ruptures (Ando et al, 2018;Ely et al, 2014;Hutchinson & Clague, 2017;Ishimura, 2017;León et al, 2022;Pinegina & Bourgeois, 2001;Pizer et al, 2021). Driven by the 2011 Tōhoku-oki earthquake (Tamura et al, 2015;Yoshikawa et al, 2015) some studies have also considered the value of tsunami deposits preserved in shallow offshore regions as recorders of past earthquakes but these has been less widely applied thus far (Costa et al, 2021;Feist et al, 2023;Kümmerer et al, 2020;Quintela et al, 2016;Riou et al, 2020).…”
Section: Paleotsunami Depositsmentioning
confidence: 99%