Progress in palaeotsunami research

Tsunamis as geomorphic crises: Lessons from the December 26, 2004 tsunami in Lhok Nga, West Banda Aceh (Sumatra, Indonesia)

. Catastrophic tsunamis are described in historical sources for all regions around the Gulf of Cadiz, at least since 60 BC. Most of the known events are associated with moderate to large earthquakes and among them the better studied is 1 November 1755. We present here a review of the events which effects, on the coasts of the Portuguese mainland and Madeira Island, are well described in historical documents or have been measured by tide gauges since the installation of these instruments. For a few we include new relevant information for the assessment of the tsunami generation or effects, and we discard events that are included in existing compilations but are not supported by quality historical sources or instrumental records. We quote the most relevant quantitative descriptions of tsunami effects on the Portuguese coast, including in all pertinent cases a critical review of the coeval sources, to establish a homogenous event list. When available, instrumental information is presented. We complement all this information with a summary of the conclusions established by paleo-tsunami research.

/pdf/revision-of-the-portuguese-catalog-of-tsunamis-2sx38adq4f.pdf

Revision of the Portuguese catalog of tsunamis

Holocene earthquake record offshore Portugal (SW Iberia): testing turbidite paleoseismology in a slow-convergence margin

Shoreline change patterns in sandy coasts. A case study in SW Spain

Historical data show that the Gulf of Cadiz has been exposed to destructive tsunamisduring at least the past 2000 yr. The last tsunami was generated by the AD 1755 Lisbon earthquake,which affected the Atlantic coasts of Spain, Portugal and Morocco. Today, these littoral areas areintensely populated and the expected damage could be much greater. Tsunami studies are of greatimportance in helping to determine the recurrence interval of these events.The presence of washover fan deposits on the inland margin of the Valdelagrana Spit bar (Cadiz,Spain) indicates the occurrence of a high energy marine event ca. 2300 cal. yr BP. Historical,geomorphological, sedimentological, palaeontological and geochronological data suggest that atsunami could have affected the area during Roman times. Copyright  2002 John Wiley & Sons,Ltd.Journal of Quaternary Science KEYWORDS: tsunami deposits; grain size; palaeontology; Gulf of Cadiz; South Spain. Introduction Investigations of the geological records of past tsunamis arean important tool in helping to determine the recurrenceinterval of such events in a region. These investigations arealso the only way of determining the prehistoric occurrenceand tsunami hazard in areas of infrequent seismic activity.However, at present it is difﬁcult to distinguish betweentsunami deposits and those laid down by other high-energyevents, such as a storm surge or hurricane. Recent work byGoff et al. (2001) has helped to identify a series of diagnosticcriteria for tsunami deposits, and research is underway tohighlight the differences between these and other high-energyevents (Goff and Chagu´e-Goff, in preparation; J. Goff, personalcommunication, 2002). Wave hydrodynamics, the speciﬁccoastal setting (morphology, orientation, availability and typeof sediments, depositional environments), tsunami magnitudeand tidal range are all factors that help to deﬁne the type andpreservation of tsunami deposits. Furthermore, the ability todetermine the tsunamigenic source largely depends upon thepalaeoseismic and historical record (e.g. Goff et al., 2001).

Sedimentary record of a tsunami during Roman times, Bay of Cadiz, Spain

Tsunamis are usually associated with submarine tectonic activity. Tsunamis transform the shore owing to their erosive and sedimentary capacity. Evidence of tsunamis can be preserved in the geological record for millions of years. The tsunami sedimentary record is a useful tool for obtaining paleoseismic information since it is the only record available that allows us to detect and to analyze ancient offshore seismicity. Three examples of tsunami deposits which contribute to the knowledge of the paleoseismicity in the Gulf of Cadiz are presented. The study of sedimentary deposits of the Valdelagrana spit barrier (Cadiz, Spain) suggests that an event such as the 1755 Lisbon earthquake (Ms 8,5-9) might have occurred ca. 216-218 BC. This is the first time data on the return period of these high magnitude events have been provided.

/pdf/tsunami-deposits-as-paleoseismic-indicators-examples-from-4buyihb2yy.pdf

Tsunami deposits as paleoseismic indicators: examples from the Spanish coast

Neotectonic fault mapping at the Gibraltar Strait Tunnel area, Bolonia Bay (South Spain)

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

L. Luque

Author Tools

Chat about Author

Papers

Sedimentary record of a tsunami during Roman times, Bay of Cadiz, Spain

Tsunami deposits as paleoseismic indicators: examples from the Spanish coast

Neotectonic fault mapping at the Gibraltar Strait Tunnel area, Bolonia Bay (South Spain)