Global ETD Search
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Showing 1 to 5 of 5 for “"pyroclastic flow"”.
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Aspects of pyroclastic flow movement and emplacement
Pyroclastic flows are products of explosive volcanic eruptions. Composed of hot gas and particulates, they move as ground hugging density currents. This study utilized comparisons with similar geologic phenomena (e.g. debris avalanches), field data, and theoretical models to investigate aspects of …
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Characterization of a volcanically impacted, overfilled continental rift basin within the southeastern Jemez Mountains, New Mexico
… the basin with about 550 m of lava and primary pyroclastic deposits and minor fluvial sediments. As a result, little or no coarse-grained epiclastic sediments were shed from adjacent footwall highlands and deposited into the basin along its margins, which is a trait of conventional rift basin …
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The eruptions of Örӕfajökull 1362 (Iceland) and Lanzarote 1730-36 (Canary Islands) : sulphur emissions and volcanology
… produced an extensive tephra-fall and a small pyroclastic flow deposit (~2 km3 total volume). In contrast, the Lanzarote eruption was a long-lasting basaltic fissure eruption involving Hawaiian and Strombolian fire fountain activity (eruption plumes 8-16 km high) generating a scoria fall …
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The role of ecological barriers in the development of cultural boundaries during the later Holocene of the central Alaska peninsula
… the Aniakchak pollen and soil data show that the pyroclastic flow from the 3400 rcy BP eruption caused a 2500 km² zone of very low productivity on the Alaska Peninsula. This ""Dead Zone"" on the central Alaska Peninsula lasted for over 1000 years. Drawing on these data and the results of …
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On Uncertainty Quantification for Systems of Computer Models
… application to quantification of the hazard from pyroclastic flow from the Soufri\`{e}re Hills Volcano on the island of Montserrat; a case study on prediction of volcanic ash transport and dispersal from the Eyjafjallaj{\"o}kull volcano, Iceland in April 14-16, 2010; and calibration of a …