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11.
Landslide hazard zonation in high risk areas of Rethymno Prefecture,Crete Island,Greece 总被引：4，自引：1，他引：3
Maria Kouli Constantinos Loupasakis Pantelis Soupios Filippos Vallianatos 《Natural Hazards》2010,52(3):599-621
The central part of Rethymnon Prefecture, Crete Island, suffers from severe landslide phenomena because of its geological
and geomorphological settings alternated by the human activities. The main landslide preparatory and triggering causal factors
are considered to be the ground conditions (lithology), geomorphological processes (fluvial erosion, etc.), and the man-made
actions (excavations, loading etc.). The purpose of this study is to develop a decision support and continuous monitoring
system of the area by composing landslide hazard and risk maps. For that reason, several approaches of the weighted linear
combination (WLC), a semi-quantitative hazard analysis method, were adopted in a Geographic Information Systems (GIS) environment.
The results were validated using a pre-existing landslide database enriched with new landslide locations mapped through image
interpretation of a processed IKONOS satellite image. The validation results showed that the WLC method coupled with remote
sensing (RS) and GIS techniques can support engineering geological studies concerning landslide vulnerability of hazardous
areas. 相似文献
12.
Earthquake vulnerability and seismic risk assessment of urban areas in high seismic regions: application to Chania City,Crete Island,Greece 总被引：2，自引：1，他引：1
The earthquake vulnerability and the seismic risk assessment for the urban center of Chania in the island of Crete is approached
through the development of a GIS-based application that takes into consideration the structural and geological domain of the
region. Considering a localized model, the various structural and geomorphologic attributes of the region were assigned specific
weights of significance that allowed the creation of a modular application that was tested for the city of Chania, and it
was verified based on the recent seismic activity of the area. The proposed risk map and model can become a significant tool
for confronting crises resulting from future earthquake incidences. 相似文献
13.
Assessment and mapping of the intrinsic vulnerability to pollution: an example from Keritis River Basin (Northwestern crete, Greece) 总被引：1，自引：1，他引：0
Due to the geological and hydrogeological characteristics, the carbonate aquifers are frequently vulnerable to natural and/or anthropogenic polluting sources. The aim of the present study is to evaluate the intrinsic vulnerability to pollution of the Keritis River Basin (northwestern Crete, Greece). The huge amount of the flowing groundwater represents a strategic water resource to be allocated to drinking water purpose and to agricultural activities, too. The studied groundwater are characterized by quality degradation processes represented by the anthropogenic and natural pollution such as olive oil farming, agriculture activities, industrial waste and salt water intrusion. For a better management and protection of the water resources, the assessment and mapping of groundwater vulnerability to pollution are very important. From this investigation, the Keritis Basin showed an intrinsic vulnerability degree from extremely high to very low. This study allows to define the strategies which will permit a proper safeguard criteria, against the pollution sources of the Keritis Basin groundwater resources. 相似文献
14.
E. S. Karapidakis Ph.D. A. A. Tsave P. M. Soupios Ph.D. Y. A. Katsigiannis Ph.D. 《International Journal of Environmental Science and Technology》2010,7(3):599-608
This study investigates the utilization of landfill biogas as a fuel for electrical power generation. Landfills can be regarded as conversion biogas plants to electricity, not only covering internal consumptions of the facility but contributing in the power grid as well. A landfill gas plant consists of a recovery and a production system. The recovery of landfill gas is an area of vital interest since it combines both alternative energy production and reduction of environmental impact through reduction of methane and carbon dioxide, two of the main greenhouse gases emissions. This study follows two main objectives. First, to determine whether active extraction of landfill gas in the examined municipal solid waste sites would produce adequate electric power for utilisation and grid connection and second, to estimate the reduction of sequential greenhouse gases emissions. However, in order to optimize the designing of a plant fed by biogas, it is necessary to quantify biogas production over several years. The investigation results of energy efficiency and environmental impact of biogas utilization in landfills are considering satisfactory enough both in electric energy production and in contribution to greenhouse gases mitigation. 相似文献