An extensive seismic reflection profile survey conducted concun:ently with a sediment coring program in northern Lake Huron, Georgian Bay, and the North Channel revealed a detailed Holocene lake level history. Seven acoustic sequences were identified in the seismic stratigraphy, and these sequences show great variation in both the character and the spatial distribution of sediment deposition th...

10 The aim of this study is to improve the assessment of hazard posed by debris flows to 11 the people and settlements of northwest Iceland by studying very recent examples from above 12 the town of Ísafjörður and other nearby localities. Debris flows are a recognised hazard in the 13 region: above Ísafjörður, they occur with particularly high frequency and have appreciable 14 volumes (up to 14...

Abstract The 2018 eruption on the lower East Rift Zone, Hawaii, involved opening of 24 fissures before focussed a single point source, fissure 8 (F8). This study characterises preserved medial F8 tephra deposit using an isopach map, maximum clast size data, and total grain distribution analysis, shedding light transport dispersal mechanisms beyond cone occurring during fountaining. sheet-like c...

In general, the conventional approach to structure study uses potential-field data, including aeromagnetic and gravity data, for detecting the basement structures, and geophysical well-log data (combined with seismic data when available) for interpreting the sedimentary cover structures. With respect to well-log data, the main approach is to interpret faults from isopach and structure-top conto...

Previous studies in the foreland of French Western Alps, based on analysis geomorphological criteria for internal moraine complex, show several stages retreat or stagnation Lyonnais ice lobe during marine isotopic 4 and 2. Based chronological data literature, age Würmian maximum extension Lyon must have occurred MIS but this result is still debated. At Last Glacial Maximum, western part lobe, g...

An isopach map made from seismic reflection and refraction data in the Bay of Bengal shows two prominent N-S trending features in the basement topography. One is the northernmost portion of the Ninetyeast Ridge which is totally buried by sediments north of 10øN. The other buried ridge trends roughly N-S for 1400 km at 85øE to the latitude of Sri Lanka and then curves toward the west. It has bas...

Geographic Information Systems (GIS) provide a good framework for solving classical problems in the earth sciences and engineering. This thesis describes the geostatistics associated with creating a geological model of the Abacherli reservoir within the Mahala oil field of the Los Angeles Basin of Southern California using a variogram-based two-point geostatistical approach. The geology of this...

The existence of nuclear installations in the Yogyakarta Nuclear Area is vulnerable to eruption Mount Merapi, most active volcano Indonesia. Tephra hazard has potential threaten operational activities Area; thus, it necessary analyze distribution and volcanic ash from Merapi for future eruptions. Numerical modelling used analyzing tephra using TEPHRA2 software with parameters 2010 eruption, whi...

Data analysis and modeling within the infrastructure of geographic information systems (GIS) applications are invaluable assets with respect to groundwater resource management and protection. In Florida, ground water comprises more than 90% of potable water resources, which are used by a population of more than 16 million. With an increase of more than 7000 residents per week, demands on Florid...