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SAFER geodatabase for the Kathmandu Valley: Geotechnical and geological variability

El Gilder, Charlotte and Pokhrel, Rama Mohan and Vardanega, Paul J. and De Luca, Flavia and De Risi, Raffaele and Werner, Maximilian J. and Asimaki, Domniki and Maskey, Prem Nath and Sextos, Anastasios (2020) SAFER geodatabase for the Kathmandu Valley: Geotechnical and geological variability. Earthquake Spectra, 36 (3). pp. 1549-1569. ISSN 8755-2930. https://resolver.caltech.edu/CaltechAUTHORS:20200831-095524760

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Abstract

The Kathmandu Valley is within a seismically active region with only few recorded strong-motion data. Geophysical information in the Valley is also sparse. In addition, the absence of an open database which compiles in situ geophysical tests, borehole records, and geotechnical laboratory data is affecting the advancement of knowledge in the region. This article presents SAFER/GEO-591 database, named after the Engineering and Physical Science Research Council (EPSRC)-funded project Seismic Safety and Resilience of Schools in Nepal (SAFER). SAFER/GEO-591 contains data from groundwater wells and boreholes originally commissioned for research and commercial purposes. This work describes (1) the quality assessment and harmonization process conducted on the dataset, (2) the variation of shear-wave velocity (V_S) measurements and geotechnical parameters with depth and elevation in the Valley, (3) the current understanding of the Valley sediment/bedrock topography, and finally (4) new geological cross sections. A companion article presents an updated V_(S30) map across the Valley based on the contributions of this article. The database can be downloaded from the University of Bristol repository via DOI: https://doi.org/10.5523/bris.3gjcvx51lnpuv269xsa1yrb0rw.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1177/8755293019899952DOIArticle
https://doi.org/10.5523/bris.3gjcvx51lnpuv269xsa1yrb0rwDOIData
ORCID:
AuthorORCID
Asimaki, Domniki0000-0002-3008-8088
Additional Information:© 2020 The Author(s). Date received: 5 February 2019; accepted: 21 November 2019. First Published February 6, 2020. The authors acknowledge the Engineering and Physical Science Research Council (EPSRC) project “Seismic Safety and Resilience of Schools in Nepal” SAFER (EP/P028926/1). The first author acknowledges the support of EPSRC (EP/R51245X/1). The database SAFER-GEO-591_v1.1 is used to produce all figures and tables in this publication. This is available for download from the University of Bristol Data Repository (Gilder et al., 2019c). In electronic Appendix A, additional figures and tables are provided; in electronic Appendix B the raster files of model b + g are included in two formats (depth or elevation). The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Engineering and Physical Science Research Council (EPSRC) Grant codes: EP/P028926/1; EP/R51245X/1. Supplemental material for this article is available online.
Funders:
Funding AgencyGrant Number
Engineering and Physical Sciences Research Council (EPSRC)EP/P028926/1
Engineering and Physical Sciences Research Council (EPSRC)EP/R51245X/1
Subject Keywords:Geodatabase, Nepal, boreholes, shear-wave velocity, VS30
Issue or Number:3
Record Number:CaltechAUTHORS:20200831-095524760
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200831-095524760
Official Citation:Gilder, C. E., Pokhrel, R. M., Vardanega, P. J., De Luca, F., De Risi, R., Werner, M. J., … Sextos, A. (2020). The SAFER geodatabase for the Kathmandu Valley: Geotechnical and geological variability. Earthquake Spectra, 36(3), 1549–1569. https://doi.org/10.1177/8755293019899952
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105162
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Sep 2020 18:55
Last Modified:08 Sep 2020 18:55

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