Pillar 2 - Tsunami Data

Sea level station monitoring facility data

The sea level monitoring facility (http://www.ioc-sealevelmonitoring.org/) collects and processes in real time data from 1250 sea level measuring stations operated by 180 institutes (station operators) world wide. The system was build and is operated by Flanders Marine Institute (VLIZ) for UNESCO as part of the GLOSS program of IOC. The station operators push the raw data to the SLSMF using different data protocols : the WMO GTS, FTP push, HTTP. The data is parsed in real-time and stored in the database. The SLSMF redistributes the parsed real time data through a series of interfaces ( webpages, a rest API, or the GTS) to the different users, including the Tsunami warning centers, the station operators and the scientific community. The SLSMF database contains the sealevel data, but also metadata, contact information and configuration data about the different stations and their sensors. The team at VLIZ, the station operators and the Tsunami warning centers, maintain the configuration data.

Catalogue of Euro-Mediterranean Tsunamis

The EMTCv2 catalogue provides a collection of 290 tsunamis generated in the European and Mediterranean seas from 6150 B.C. to 2014, classified by the generating cause, whereas the ITED database furnishes a collection of evidence documenting the tsunami effects observed along the Italian coasts.in the European and Mediterranean seas from 6150 B.C. to 2014, classified by the generating cause, whereas the ITED database furnishes a collection of evidence documenting the tsunami effects observed along the Italian coasts.

The Euro-Mediterranean Submarine landSlide database (EMSS25)

EMSS25 is a catalogue of several morphological and sedimentary features of submarine landslides of the Mediterranean Sea and the Atlantic and Arctic continental margins of Europe. It also contains limited information from other areas of the world oceans. The catalogue is compiled from results in the scientific literature as well as information collected from geophysical data and not published yet. The data set includes polygons and polylines for the landslide deposits, landslide source areas and landslide scars as well as information relative to age, volume, area, runout, thickness, typology, scar elevation, depth, slope as well as relevant metadata. Deposits, sources and scars are linked/related by the MatchingID field. The catalogue includes submarine landslides that span the Miocene to Present day. Nevertheless a clear bias exist towards submarine landslides of younger age and large size. Smaller events, particularly older than Holocene events, are difficult to map/identify on lower resolution geophysical data sets typically collected in deep-water and large sub-surface depths and are likely underrepresented in the database. The catalogue aims to offer improved understanding of mass-wasting processes, the potentially resulting tsunamis and derived geohazard.

The EMSS25 displays information collected from both the literature and geophysical records. Data from the literature is collected from georeferenced map figures, from which the outline of the landslide deposit and the landslide scar have been digitized (see workflow below). Most information such as age, volume, typology, and metadata is extracted from the relevant article. Area of the deposit and landslide runout is determined from the digitized polygons and polylines, volume (if not available) is determined from area and mean thickness. If the latter is not available, the volume is determined from the Area-Volume relationship for landslides where volume has already been determined. When the data originates directly from geophysical records the outline and scars have been determined from geomorphological interpretation of swath bathymetric maps, EMODNET bathymetry data and a variety of seismic records. In such instances, age information originates from a variety of methods presenting a wide range of accuracy, from radiometric dating to well-seismic correlation as well as ages inferred from mean sedimentation rates. In many instances, landslides identified in the literature are dated with an age epoch only.

Minute sea-level analysis global dataset

The global 1 min sea-level dataThe global 1 min sea-level dataset-MISELA is encompassing quality-checked records of nonseismic sea-level oscillations at tsunami timescales (T < 2 h) obtained from 331 tide-gauge sites. The dataset can be accessed from the Marine Data Archive.

The ASTARTE Paleotsunami Deposits database—NEAM region is a relational geographic database comprising a total of 151 sites and 220 tsunami evidence (events) recorded for the whole North-East Atlantic and Mediterranean seas region. The database structure is characterised by two main tables: Site and Event (tsunami).

Tsunami Observation Points Data Base for Eastern Mediterranean

This is a parametric DB which compiles detailed data about the Observation Points (OP) of past tsunamis. For each past tsunami the DB includes the name and geographical coordinates of each separate OP as well as corresponding tsunami parameters like wave height, run-up etc in each OP. At the same time, the corresponding intensity characterization (in 12-point scale) is included. So far, we have compiled and mapped OP data for the 9 July 1956 tsunami, which is the largest observed in Eastern Mediterranean in the last centuries. This service advances the already published tsunami catalogues and the relevant webDBs created by INGV.

Tsunami Impact Data Base for Greece

This DB is a parametric compilation of data about the various types of tsunami impact in Greece, such as fatalities, injuries, damage in buildings and damage in vessels. So far this DB contains data for the time period from AD 1800 to 2020. Parameters of the seismic and other tsunami sources are also included.