Geologic maps are complex scientific documents that provide considerably more than cartographic representations of geologic information. Modeling these documents in sufficient detail that they can be recorded and manipulated in computer database form, not simply as raster graphics, is essential to continued progress in geologic science. This paper discusses the principal challenges in geologic ...

Living in areas of highly active natural processes as the alpine environment demands the careful assessment of natural hazards and their provision in regional and local development planning processes, providing the chance to substantially reduce damage and loss of property and lives. Consequently techniques for the corresponding tasks of mapping and monitoring natural hazards are subject of ong...

Hazard mapping in poorly known volcanic areas is complex since much evidence of volcanic and non-volcanic hazards is often hidden by vegetation and alteration. In this paper, we propose a semi-quantitative method based on hazard event tree and multi-hazard map constructions developed in the frame of the FP7 MIAVITA project. We applied this method to the Kanlaon volcano (Philippines), which is c...

A geologic map is a 2-dimensional representation of an interpretation of 3-D phenomena. The work of a geologist consists mainly in (i) inferring subsurface structures from observed surface phenomena and (ii) building abductive models of events and processes that shaped them during the geologic past. In order to do this, chains of explanations are used to reconstruct the Earth history step-by-st...

The addition of passing lanes has been a long standing need on Idaho Route 55. This narrow, winding road is one of the few routes that links Boise, Idaho, with destinations to the north. The roadway is bounded by a steep rising slope on the east, and a precipitous drop to the Payette River on the west. Additionally, the area is known for landslide hazards. Given these hazards and uncertainties ...

Coordinated research efforts are underway on three continents (North America, Europe, Australia) to study naturally occurring carbon dioxide deposits, in order to address fundamental questions and concerns about the long-term storage of CO2 in geologic formations. Natural accumulations of carbon dioxide exist in many geologic basins. Some deposits are stored in secure and impermeable traps, whe...

In this paper we describe CO2-PENS, a comprehensive system-level computational model for performance assessment of geologic sequestration of CO2. CO2-PENS is designed to perform probabilistic simulations of CO2 capture, transport and injection in different geologic reservoirs. Additionally, the long-term fate of CO2 injected in geologic formations, including

Sonic velocities of geologic fluids, such as volcanic magmas and geothermal fluids, can be as low as 1 m/s. Critical velocities in large rivers can be of the order of 1-10 m/s. Because velocities of fluids moving in these settings can exceed these characteristic velocities, sonic and supersonic gas flow and critical and supercritical shallow-water flow can occur. The importance of the low chara...