نتایج جستجو برای: geologic hazards
تعداد نتایج: 44555 فیلتر نتایج به سال:
The reemerging field of Medical Geology is concerned with the impacts of geologic materials and geologic processes on animal and human health. Most medical geology research has been focused on health problems caused by excess or deficiency of trace elements, exposure to ambient dust, and on other geologically related health problems or health problems for which geoscience tools, techniques, or ...
Modern ground-water flow models, geotechnical studies, and science-based land-use planning require knowledge of the distribution of surficial earth materials from land surface to the top of bedrock (e.g., Masterson and others, 1997a,). To be useful, modern geologic maps must portray such information three dimensionally in a way that is consistent with the regional stratigraphic framework, geote...
A geologic map is a fundamental scientific tool that shows the distribution of geologic material. This study used data gathered at Seven Mile Creek Park to make a geologic map. This data examines the relationships between ravine cutting, terrace development, and base level in a tributary to the Minnesota River, known as Seven Mile Creek. Within the Park there is an extensive network of ravines ...
A geologic map is a fundamental scientific tool that shows the distribution of geologic material. This study used data gathered at Seven Mile Creek Park to make a geologic map. This data examines the relationships between ravine cutting, terrace development, and base level in a tributary to the Minnesota River, known as Seven Mile Creek. Within the Park there is an extensive network of ravines ...
During numerical simulation of geotechnical engineering, due to the complex engineering geological condition, the simplified geologic model is usually adopted. However, the accuracy and reliability of calculating result are directly influenced by characteristic of model. The 3D geologic model can better reflect the actual geological condition. The paper presents a new and practical modeling met...
Over the last two decades, the California Geological Survey (CGS) has increasingly received requests for environmental geology/mineralogy/geochemistry information from State and local agencies, consultants, industries, and the public. These requests have led to projects to identify and map potential mineral hazards such as naturally occurring asbestos, heavy metals, and radon. In these projects...
Geological analysis of planets typically begins with the construction of a geologic map of the planets' surfaces using remote data sets. Geologic maps provide the basis for interpretations of geologic histories, which in turn provide critical relations for understanding the range of processes that contributed to the evolution. Because geologic mapping should ultimately lead to the discovery of ...
An important step in seismic interpretation is segmentation of a seismic image into structural and stratigraphic geologic units. Today, we often perform this segmentation using a simple process. We first automatically track seismic events to locate horizons and faults that correspond to the boundaries of geologic units. We then glue those boundaries together to obtain a geologic model. This pro...
First posted January 14, 2022 For additional information, contact: Director, Florence Bascom Geoscience CenterU.S. Geological Survey12201 Sunrise Valley DriveReston, VA 21092Contact Pubs Warehouse The U.S. Survey (USGS) National Cooperative Geologic Mapping Program (NCGMP) has published a strategic plan entitled “Renewing the as Nation’s Authoritative Source for Modern Knowledge”. This provides...
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