Correlative Study between Ground Motion Parameters and Geological Hazards Distribution in Bailong River Basin

Aiguo Wang, Daoyang Yuan, Bo Zhang, Wengui He

2018

Abstract

Bailong river basin is located at the north-east margin of Qinghai-Tibet Plateau. It is a high seismic intensity region with a frequent occurrence of earthquakes and also a geo-hazards developed regions with intensive landslides and debris flows. Based on comprehensive isoseismal lines of historical earthquakes and the result of ground motion parameters zoning, the deterministic zoning of seismic intensity (I) and peak ground acceleration (PGA) in Bailong river watershed were given. For each zone of seismic intensity and PGA, the number of landslides and debris flows and some geological hazard statistical parameters such as hazard number, hazard develop rate, and the density of hazard occurrence were calculated and analyzed. The results show that there was a positive correlation between the geological hazard statistical indices and seismic intensity and PGA value. Higher the seismic intensity (I) and PGA value, larger the geological hazard statistical indices in a seismic zone. Using a logarithmic function method, the fitting functions between the hazard occurrence density of landslides and debris flows and the value of seismic intensity or PGA value were obtained with a high fitting degree, which can be applied as reference of geological hazards evaluation for the similar geologic environment.

Paper Citation

in Harvard Style

Wang A., Yuan D., Zhang B. and He W. (2018). Correlative Study between Ground Motion Parameters and Geological Hazards Distribution in Bailong River Basin.In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 440-444. DOI: 10.5220/0007431604400444

in Bibtex Style

@conference{iweg18,
author={Aiguo Wang and Daoyang Yuan and Bo Zhang and Wengui He},
title={Correlative Study between Ground Motion Parameters and Geological Hazards Distribution in Bailong River Basin},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={440-444},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007431604400444},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Correlative Study between Ground Motion Parameters and Geological Hazards Distribution in Bailong River Basin
SN - 978-989-758-342-1
AU - Wang A.
AU - Yuan D.
AU - Zhang B.
AU - He W.
PY - 2018
SP - 440
EP - 444
DO - 10.5220/0007431604400444