DBPapers
DOI: 10.5593/sgem2017/12/S02.071

MORPHOLOGY-BASED ASSESSMENT OF GEOLOGICAL RISKS IN THE MOUNTAIN AREAS – CASE OF WESTERN CAUCASUS, SOCHI OLYMPIC FACILITIES

A.I. Zhirov, S.F. Boltramovich, M.N. Kalygin
Sunday 10 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-99-5 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 12, 553-562 pp, DOI: 10.5593/sgem2017/12/S02.071

ABSTRACT

Many sports facilities were constructed in the Sochi area prior to Winter Olympics, 2014. We contributed to this by conducting the research of geological risks on the northern slopes of Aibga Ridge – the place allocated for construction of mountain skiing tracks. Initial data of the study comprised digital topographic model, field findings, and remote sensing data. All these were organized by using the instruments of MapInfo Geographic Information System (GIS). The research was based on the system-morphological approach developed by A. Lastochkin. This approach assumes that the GIS data sets are bound not to the map sells or nodes but to the areal elements of relief, which were preliminary identified. Another methodological base was a multifactor analysis. It included the assessment of four factor groups: 1) geomorphologic (morphological parameters, slope mass movements), 2) lithologic (type of soil), 3) endogenous (faults and potential seismicity), and 4) hydrologic ones. These factors were expertly evaluated and mapped. The compiled assessment maps allowed identifying of safe and potentially dangerous plots and, thus, well designing of Olympic mountain skiing facilities. The research also revealed a high correlation (0.8-0.9) between morphometric indicators and potentially dangerous slope processes. We believe that this morphology-based assessment of geological risks can be used for different construction purposes in various mountain areas.

Keywords: geological risks, system-morphological approach, mountain areas