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Probabilistic digital hazard maps for avalanches and massive pyroclastic flows using TITAN2D

Michael F. Sheridan, Abani K. Patra, Keith Dalbey and Bernard Hubbard
Probabilistic digital hazard maps for avalanches and massive pyroclastic flows using TITAN2D (in Stratigraphy and geology of volcanic areas, Gianluca Groppelli (editor) and Lothar Viereck-Goette (editor))
Special Paper - Geological Society of America (April 2010) 464: 281-291


Geologists create volcanic hazard maps using scientific data to portray potential future geological events; the end users are principally public safety officials. Typical maps use a few simple polygons to outline areas of potential inundation or cover by a few categories of flows based on past frequency and size. Uncertainties in data regarding flow characteristics complicate the construction of accurate hazard maps. Generally, there are inadequate exposures of good sections, poorly known extents of units, and imprecise volumes for deposits. Crisis conditions limit the time available for field and laboratory work. Computer models can simulate possible scenarios, but the volumes, styles of emplacement, and source starting locations are poorly known in many cases. The large uncertainty in initial conditions is seldom taken into account in the construction of hazard maps, and these uncertainties are rarely passed on to the end users of the maps. TITAN2D is a computational model for volcanic block-and-ash flows and rock avalanches of various types and scales, and it forms the core of the TITAN toolkit for volcanic hazard analysis, which can integrate high-performance computing, database management, and visualization to a very sophisticated level. TITAN provides a solution to mapping problems by providing a probabilistic calculation of inundation depth that takes into account many of the critical uncertainties.

ISSN: 0072-1077
EISSN: 2331-219X
Serial Title: Special Paper - Geological Society of America
Serial Volume: 464
Title: Probabilistic digital hazard maps for avalanches and massive pyroclastic flows using TITAN2D
Title: Stratigraphy and geology of volcanic areas
Author(s): Sheridan, Michael F.Patra, Abani K.Dalbey, KeithHubbard, Bernard
Author(s): Groppelli, Gianlucaeditor
Author(s): Viereck-Goette, Lothareditor
Affiliation: State University of New York at Buffalo, Department of Geology, Buffalo, NY, United States
Affiliation: CNR, Istituto per la Dinamica dei Processi Ambientale, Milan, Italy
Pages: 281-291
Published: 201004
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 50
Accession Number: 2010-064065
Categories: Quaternary geologyEnvironmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch maps
N19°01'00" - N19°01'00", W97°16'00" - W97°16'00"
N46°52'00" - N46°52'00", W121°45'00" - W121°45'00"
Secondary Affiliation: Friedrich-Schiller-Universitaet Jena, DEU, Federal Republic of GermanySandia National Laboratories, USA, United StatesU. S. Geological Survey, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201035
Program Name: USGSOPNon-USGS publications with USGS authors
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