English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
 Local TagsRelease HistoryDetailsSummary
  Tsunami forecasting variability as resulting from slip models obtained by geophysical data inversion and by a Phase Variation Method

Romano, F., Catalan, P., Lorito, S., Escalante Sanchez, C., Atzori, S., Lay, T., Tonini, R., Volpe, M., Piatanesi, A., Macias Sanchez, J., Castro Diaz, M. (2023): Tsunami forecasting variability as resulting from slip models obtained by geophysical data inversion and by a Phase Variation Method, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4640

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021049 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021049_2
Genre: Conference Paper

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Romano, Fabrizio1, Author
Catalan, Patricio1, Author
Lorito, Stefano1, Author
Escalante Sanchez, Cipriano1, Author
Atzori, Simone1, Author
Lay, Thorne1, Author
Tonini, Roberto1, Author
Volpe, Manuela1, Author
Piatanesi, Alessio1, Author
Macias Sanchez, Jorge1, Author
Castro Diaz, Manuel1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

Content

show
hide
Free keywords: -
 Abstract: The accurate estimate of the tsunami forecast is crucial in Tsunami Early Warning Systems (TEWS) framework. However, the inherent uncertainties associated with the tsunami source estimation in real-time make tsunami forecasting challenging. In this study, we consider the South American subduction zone, one of the most seismically active regions in the world, where in the last 15 years occurred, three M8+ tsunamigenic earthquakes; in particular, we focus on the 2014 Mw 8.1 Iquique event. Here, we compare the tsunami forecasting for the Chilean coast as resulting i) from the coseismic slip model obtained by geophysical data inversion and ii) from an expeditious method for the tsunami source estimation, based on an extension of the well-known spectral approach. In the former method, we estimate the slip distribution of the 2014 Iquique earthquake by jointly inverting tsunami waveforms and GPS data; on the other hand, a set of stochastic slip models in the latter is generated through a Phase Variation Method (PVM), where realizations are obtained from both the wavenumber and phase spectra of the source. We also evaluate how the different physics complexity included in the tsunami modelling (e.g. by including dispersion or not) can be mapped into the tsunami forecasting uncertainty. Finally, as an independent check, we compare the predicted deformation field from the slip models (inverted or by PVM) with the RADARSAT-2 InSAR data.

Details

show
hide
Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4640
 Degree: -

Event

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

Legal Case

show

Project information

show

Source 1

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -