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Authors: Christophersen, A.* 
Litchfield, N.* 
Berryman, K.* 
Thomas, R.* 
Basili, R.* 
Wallace, L.* 
Ries, W.* 
Hayes, G. P.* 
Haller, K. M.* 
Yoshioka, T.* 
Koehler, R. D.* 
Clark, D.* 
Wolfson-Schwehr, M.* 
Boettcher, M. S.* 
Villamor, P.* 
Horspool, N.* 
Ornthammarath, T.* 
Zuñiga, R.* 
Langridge, R. M.* 
Stirling, M. W.* 
Goded, T.* 
Costa, C.* 
Yeats, R.* 
Title: Development of the Global Earthquake Model’s neotectonic fault database
Issue Date: Jun-2015
Series/Report no.: /79 (2015)
DOI: 10.1007/s11069-015-1831-6
Keywords: Global Earthquake Model
Fault database
Earthquake fault source
GEM Faulted Earth
Subject Classification04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology 
04. Solid Earth::04.04. Geology::04.04.09. Structural geology 
04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution 
04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk 
04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics 
04. Solid Earth::04.07. Tectonophysics::04.07.04. Plate boundaries, motion, and tectonics 
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 
05. General::05.02. Data dissemination::05.02.02. Seismological data 
Abstract: The Global Earthquake Model (GEM) aims to develop uniform, openly available, standards, datasets and tools for worldwide seismic risk assessment through global collaboration, transparent communication and adapting state-of-the-art science. GEM Faulted Earth (GFE) is one of GEM’s global hazard module projects. This paper describes GFE’s development of a modern neotectonic fault database and a unique graphical interface for the compilation of new fault data. A key design principle is that of an electronic field notebook for capturing observations a geologist would make about a fault. The database is designed to accommodate abundant as well as sparse fault obser- vations. It features two layers, one for capturing neotectonic faults and fold observations, and the other to calculate potential earthquake fault sources from the observations. In order to test the flexibility of the database structure and to start a global compilation, five preexisting databases have been uploaded to the first layer and two to the second. In addition, the GFE project has characterised the world’s approximately 55,000 km of subduction interfaces in a globally consistent manner as a basis for generating earthquake event sets for inclusion in earthquake hazard and risk modelling. Following the subduction interface fault schema and including the trace attributes of the GFE database schema, the 2500-km-long frontal thrust fault system of the Himalaya has also been characterised. We propose the database structure to be used widely, so that neotectonic fault data can make a more complete and beneficial contribution to seismic hazard and risk characterisation globally.
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