CALTRANS Seismic Hazard/Risk Map and Proposed GIS Applications
The California Department of Transportation (CALTRANS) considers earthquake effects in planning, design, and construction of their structures. Obviously, CALTRANS has to respond to damaging...

A Geotechnically-Oriented GIS for Seismic Hazard Mapping
A geotechnical GIS has been configured by the California Department of Conservation's Division of Mines and Geology for the purpose of designating seismic hazard zones as mandated by recent...

State of the Art in Spatial Data Transfer: FIPS 173
This paper provides an overview of Federal information processing standard (FIPS) 173. FIPS 173 is a comprehensive spatial data transfer standard that provides solutions to the problem...

AM or GIS for Managing Infrastructure
The two approaches to managing infrastructure are discussed in this paper: Automated Mapping (AM) and Geographic Information System (GIS) It is very important to recognize their similarities...

Atlas of Present Tidal Marshlands, San Francisco Bay, California
An atlas of 26 maps (including index) is described showing existing tidal marshlands of the San Francisco Bay estuarine complex. This work is based upon a prior delineation and acreage...

Reducing Ambiguity in Qualitative Reasoning
Qualitative reasoning derives the behavior of a physical system using a representation of the fundamental principles for the domain. In qualitative reasoning parameters are mapped into...

Summary of Revised Potentiometric-Surface Map for Yucca Mountain and Vicinity, Nevada
The revised map for the potentiometric surface of the uppermost saturated zone in Tertiary volcanic rocks at Yucca Mountain, Nevada, is based mainly on 1988 water levels. Refinement of...

Winter Storm Mapping a Geographic Information Systems Transportation Applications
The Winter Storm Mapping System (WSMS) has grown out of our Geographic Information System for Transportation (GIS-T). The development of this project began the spring of 1991 on the State...

A Prospect for Liquefaction Hazard Evaluation Using GIS
A brief description of a recently developed methodology to evaluate liquefaction hazard at a site is presented. In this method, uncertainty and scatter in the data are considered rigorously....

A Dynamic Mapping Application for an ATIS
A dynamic mapping application for an Advanced Traveler Information System (ATIS) is described. The application requires tracking maintenance vehicles so that paths can be displayed indicating...

Comparative Accuracies of Technologies for Vehicle Location and Navigation
A variety of vehicle location and tracking technologies are under consideration for such IVHS applications as Automatic Vehicle Location (AVL), Computer Aided Dispatch (CAD), and vehicle...

The Utah Climate Center Weather Data Network
The Utah Climate Center weather data network includes 52 sophisticated, automated weather stations. Weather parameters are monitored in real-time and hourly summarized data are gathered,...

Historical Atlas of Tidal Creeks, San Francisco Bay, California
Historic widths and depths of 69 major tidal creeks in San Francisco Bay were studied from maps dated from 1852 to the 1980's. Survey maps by the U.S. Coast Survey (and successors, U.S....

Mean Areal Precipitation Estimation Using Radar
The accuracy of mean areal total storm precipitation (MAP) over small urban basins (30-100 km2) in the Denver, CO metro region was examined using...

Trends in Digital Road Map Databases for Microcomputer Applications in Transportation
Advances in the technology and coverage of precision digital road-map database, combined with advances in the size and data processing capacity of microcomputers, are together contributing...

Tutorial: Fuzzy Expert Systems
This extended abstract presents a brief introduction to a tutorial on fuzzy expert systems. The precepts of set theory and classical predicate logic are briefly reviewed to provide a foundation...

A Man-Machine Partnership for Map Production: An Application of Image Classification and Auto-Vectorization in Charting Coastlines
The semi-automatic production of coastal area maps through computer processed digital images is described. Two sources of digital imagery were addressed: satellite and aircraft mounted...

Challenges Associated with Metriciation of the Nautical Chart
Under the Metric conversion Act of 1975, Omnibus Trade and Competitiveness Act of 1988, and Executive Order 12770 of 1991 all federal agencies are required to convert to the international...

Application of Acoustic Hydrosurvey Technology to the Mapping of Eelgrass (Zostera marina) Distribution in Humboldt Bay, California
Acoustic hydrosurvey technology provides an efficient and accurate means of surveying the distribution of submerged aquatic vegetation under some circumstances. The San Francisco District,...

GIS Mapping of Earthquake Ground Shaking in San Francisco, California
Severe earthquakes of the last decade in Mexico, Armenia, and the United States have reemphasized the importance of local geologic site conditions in estimating damage and consequent losses....

 

 

 

 

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