An overview of high spatial resolution geophysical methods for landslide characterisation and monitoring:25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019

Whiteley, J. and Kendall, M. and Sujitapan, C. and Inauen, C. and Swift, R. and Watlet, A. and Raines, M. and Boyd, J. and Cimpoiasu, M. and Holmes, J. and Sibbett, L. and Uhlemann, S. and Chambers, J. (2019) An overview of high spatial resolution geophysical methods for landslide characterisation and monitoring:25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019. In: 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019, 2019-09-082019-09-12, Fokker Terminal.

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Abstract

Combining geophysical methods allows for the characterisation and monitoring of subsurface processes in landslide systems at unprecedented spatiotemporal resolutions. For high spatial resolution characterisation and monitoring of the subsurface, methods that provide maps, cross-sections and three-dimensional volumes of data are preferred. An overview of the results of various long-term monitoring campaigns using such geophysical methods at the Hollin Hill Landslide Observatory in the UK are presented. These methods include electrical resistivity and seismic tomography, self-potential mapping and cross-sections of horizontal-to-vertical ratio measurements of ambient seismic noise. Repeating these surveys over time results in the production of time-lapse data, making these approaches effective monitoring tools. Variations in these measurements show relationships to changes in environmental conditions, for example, decreases in seismic velocity and resistivity values associated with decreases in soil moisture content. Critically, the use of geotechnical-geophysical relationships can provide information between, and beyond the depth of, shallow geotechnical and surface environmental sensors. Using such time-series of high resolution spatial data can help achieve a better understanding of the moisture and kinematic dynamics of unstable slopes, and provides subsurface information for incorporation in to local landslide early warning systems. © 2019 25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019. All rights reserved.

Item Type:
Contribution to Conference (Paper)
Journal or Publication Title:
25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019
Additional Information:
Conference code: 160826 Export Date: 30 July 2020 Correspondence Address: Whiteley, J.; British Geological SurveyUnited Kingdom References: Bièvre, G., Jongmans, D., Winiarski, T., Zumbo, V., Application of geophysical measurements for assessing the role of fissures in water infiltration within a clay landslide (Trièves area, French Alps) (2012) Hydrological Processes, 26, pp. 2128-2142; Castellaro, S., Mulargia, F., Bianconi, L., Passive seismic stratigraphy: A new efficient, fast and economic technique (2005) J. Geotech. Environ. Geol, 3, pp. 51-77; Colangelo, G., Lapenna, V., Perrone, A., Piscitelli, S., Telesca, L., 2D Self-Potential tomographies for studying groundwater flows in the Varco d'Izzo landslide (Basilicata, southern Italy) (2006) Engineering Geology, 88, pp. 274-286; Grandjean, G., Hibert, C., Mathieu, F., Garel, E., Malet, J.-P., Monitoring water flow in a clay-shale hillslope from geophysical data fusion based on a fuzzy logic approach (2009) Comptes Rendus Geoscience, 341, pp. 937-948; Imposa, S., Grassi, S., Fazio, F., Rannisi, G., Cino, P., Geophysical surveys to study a landslide body (north-eastern Sicily) (2017) Natural Hazards, 86, pp. 327-343; Jongmans, D., Garambois, S., Geophysical investigation of landslides: a review (2007) Bulletin De La Societe Geologique De France, 178, pp. 101-112; Mccann, D. M., Forster, A., Reconnaissance geophysical methods in landslide investigations (1990) Engineering Geology, 29, pp. 59-78; Pecoraro, G., Calvello, M., Piciullo, L., Monitoring strategies for local landslide early warning systems (2019) Landslides, 16, pp. 213-231; Uhlemann, S., Chambers, J., Wilkinson, P., Maurer, H., Merritt, A., Meldrum, P., Kuras, O., Dijkstra, T., Four-dimensional imaging of moisture dynamics during landslide reactivation (2017) Journal of Geophysical Research: Earth Surface, 122, pp. 398-418; Uhlemann, S., Hagedorn, S., Dashwood, B., Maurer, H., Gunn, D., Dijkstra, T., Chambers, J., Landslide characterization using P- and S-wave seismic refraction tomography - The importance of elastic moduli (2016) Journal of Applied Geophysics, 134, pp. 64-76; Whiteley, J. S., Chambers, J. E., Uhlemann, S., Wilkinson, P. B., Kendall, J. M., Geophysical Monitoring of Moisture-Induced Landslides: A Review (2019) Reviews of Geophysics, 57, pp. 106-145
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ID Code:
146152
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Deposited On:
10 Jun 2021 16:00
Refereed?:
Yes
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Published
Last Modified:
23 Jun 2021 09:21