First posted August 15, 2023 For additional information, contact: Associate Director, Natural HazardsU.S. Geological Survey12201 Sunrise Valley Dr., Mail Stop 905Reston, VA 20192Contact Pubs Warehouse Every year in the United States, natural hazards threaten lives and livelihoods, resulting thousands of casualties billions dollars damage. The U.S. Survey (USGS) Hazards Mission Area works with m...

The purpose of this paper was to produce the geological hazard-susceptibility map for Changbai Mountain area affected by volcanic activity. First, 159 landslides and 72 debris flows were mapped in Helong city are based on disaster investigation regionalization (1:50,000) project City. Then, twelve landslide conditioning factors eleven flow selected as modeling variables. Among them, transcenden...

Abstract The coastal zone in which the lagoons of La Mata and Torrevieja (Eastern Spain) developed can be described as a compilation geo-hazards typical Mediterranean realm. This study has focused mainly on those linked to recent tectonics. Extensive use amino acid racemization dating method allowed us establish evolution all geomorphological units differentiated area, most striking manifestati...

Earth consists of hard rock layers where water is restricted to secondary permeability, and thus to fractures and the weather zones. Structural geology studies, geologic lineaments and their pattern information are essential for better planning and execution of projects to avoid any natural hazards. Satellite images, aerial photographs and digital elevation models will give lineament informatio...

Geological conditions along long distance pipelines are complex. In consideration of differences in elevation and terrain obstacles, long distance pipelines are commonly laid through tunnels. Oil and gas pipelines are often laid side by side to reduce construction costs and minimize geological impact. The layout and construction of parallel oil and gas pipelines are more complex than those of s...

Anomalous, large pipe-to-soil potentials (PSP) have been observed along a natural gas pipeline in eastern Ontario, Canada, where there is a major geological contact between the highly resistive rocks of the Precambrian Shield to the west and the more conductive Paleozoic sediments to the east. This study tested the hypothesis that large variations of PSP are related to lateral changes of Earth ...

Many counties in southwestern China were devastated by the Wenchuan earthquake, and this earthquake also induced several geological hazards. Therefore, evaluation of eco-geological environment disaster area is essential for county restoration ecological remediation. This research considers Pingwu County, which located 89 km from epicenter as study to evaluate carrying capacity. First, three ind...