what is a geological hazard
A geologic hazard is one of several types of adverse geologic conditions capable of causing damage or loss of property and life. These hazards consist of sudden phenomena and slow phenomena:Sudden phenomena include: 1  avalanches (snow, rock, or air & snow) and its runout. 2  earthquakes and earthquake-triggered phenomena such as tsunamis.3  forest fires (espec. in Mediterranean areas) leading to deforestation. Geologic hazards may be avoided by relocation. 2  The stability of sloping earth can be improved by the construction of retaining walls, which may use techniques such as slurry walls, shear pins, tiebacks, soil nails or soil anchors. 3  Larger projects may use gabions and other forms of earth buttress.