Characterization of material changes with depth (profiles) in many landfill sites can be problematic for some conventional geophysical methods. Localized anomalies within the landfill can complicate mapping of underlying layers, and layered-model techniques are inappropriate for imaging laterally discontinuous landfills. Recently-developed geophysical hardware and software tools provide the opp...

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...

Introduction: Significant differences exist between a digital elevation model (DEM) of the Beethoven quadrangle of Mercury, derived from Mariner 10 stereo images [1,2], the shaded relief map [3], and the image mosaic of the region. The images of the Beethoven quadrangle, located in the equatorial region (25oN to 25oS, 72oW to 144oW) of Mercury, were acquired at high sun angles by Mariner 10 [4]...

The Unnamed Plateau is a low plateau in the Western Desert of Egypt close to Libyan border, about halfway between Gilf Kebir north and Jebel Uweinat south. It little known seldom visited. In past, we have conducted three field surveys order assess its geomorphic features human presence Holocene. During our explorations found Paleozoic fossil plant, which allows ascribe sedimentary cover late (a...

Extracting fault, unconformity, and horizon surfaces from a seismic image is useful for interpretation of geologic structures and stratigraphic features. Although interpretation of these surfaces has been automated to some extent by others, significant manual effort is still required for extracting each type of these geologic surfaces. I propose methods to automatically extract all the fault, u...

Large–scale landslides in Valles Marineris wallrock are analyzed in order to determine what triggering mechanisms caused the landslides. These landslides occur in the locality of large faults, and therefore it is hypothesized that the landslides are the result of marsquakes triggering slope instability. This work confirms that landslides occur where the seismic hazard map forecasts highest seis...

Determination of optimal well locations is a challenging task because engineering and geologic variables affecting reservoir performance are often nonlinearly correlated and uncertain. This study presents an approach where an optimization technique based on a “quality map” in combination with genetic and polytope algorithms is used in determining optimal well locations. The objective of the stu...

First posted March 7, 2023 For additional information, contact: Geology, Energy & Minerals Science CenterU.S. Geological SurveyMail Stop 95412201 Sunrise Valley DriveReston, VA 20192Email: [email protected] As the United States transitions away from fossil fuels, its economy will rely on more renewable energy. Because current energy sources sometimes produce variable power supplies, it ...

This paper deals with landslide hazard and risk analysis using Geographic Information System (GIS) and remote sensing data for Cameron Highland, Malaysia. Landslide locations were identified in the study area from interpretation of aerial photographs and field surveys. Topographical/geological data and satellite images were collected and processed using GIS and image processing tools. There are...