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Active Tectonics and Seismic Potential of Alaska

Active Tectonics and Seismic Potential of Alaska
Author: Jeffrey T. Freymueller
Publisher: John Wiley & Sons
Total Pages: 1025
Release: 2013-06-05
Genre: Science
ISBN: 111867183X

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Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 179. This multidisciplinary monograph provides the first modern integrative summary focused on the most spectacular active tectonic systems in North America. Encompassing seismology, tectonics, geology, and geodesy, it includes papers that summarize the state of knowledge, including background material for those unfamiliar with the region; address global hypotheses using data from Alaska; and test important global hypotheses using data from this region. It is organized around four major themes: subduction and great earthquakes at the Aleutian Arc, the transition from strike slip to accretion and subduction of the Yakutat microplate, the Denali fault and related structures and their role in accommodating permanent deformation of the overriding plate, and regional integration and large-scale models and the use of data from Alaska to address important global questions and hypotheses. The book's publication near the beginning of the National Science Foundation's EarthScope project makes it especially timely because Alaska is perhaps the least understood area within the EarthScope footprint, and interest in the region can be expected to rise with time as more EarthScope data become available.


Active Faulting and Seismic Hazards in Alaska

Active Faulting and Seismic Hazards in Alaska
Author: Richard D. Koehler
Publisher:
Total Pages: 59
Release: 2018
Genre: Earthquake hazard analysis
ISBN:

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Alaska is the most seismically active region of the United States and large, frequent earthquakes pose significant seismic hazards to the state’s infrastructure and inhabitants. Despite the risks associated with high rates of tectonic activity, geologic information on the relative activity of Quaternary faults is sparse. This report is designed to provide guidance for future earthquake research in Alaska, serve as a resource for seismic hazard studies, and complement the Alaska Quaternary fault database (Koehler and others, 2012a; Koehler, 2013). It summarizes the current state of knowledge pertaining to the paleoseismic characteristics of active faults throughout the state and represents the first comprehensive compilation of paleoseismic data for Alaska. The report is organized into eight seismic source regions, and includes unpublished observations from many active faults briefly visited during field campaigns associated with ongoing infrastructure studies of the Alaska Division of Geological & Geophysical Surveys. In a summary report of this nature, it is inevitable that some information might have been overlooked. Although additional future paleoseismic characterization of active faults is needed to adequately address seismic hazards and risk in the state, the information presented here contributes to the core charter of the Alaska Seismic Hazards Safety Commission by providing data that will ultimately lead to better hazard evaluations and mitigation practices.


Investigation of Potentially Active Tectonic Faults Along the Route of the Proposed Alaska Stand Alone Pipeline, Livengood to Cook Inlet, Alaska

Investigation of Potentially Active Tectonic Faults Along the Route of the Proposed Alaska Stand Alone Pipeline, Livengood to Cook Inlet, Alaska
Author: Richard D. Koehler
Publisher:
Total Pages: 78
Release: 2015
Genre: Engineering geology
ISBN:

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"The Alaska Division of Geological & Geophysical Surveys completed surficial-geologic mapping, lidar data evaluations, and paleoseismic trenching investigations along the Minto Flats seismic zone (Minto fault), the Northern Foothills thrust and associated backthrust faults, and the Stampede–Little Panguingue Creek, Healy Creek, Healy, Park Road, Denali, and Castle Mountain faults. Additionally, aerial reconnaissance and lidar assessment were completed along the Tozitna, Kaltag Extension, and Victoria Creek faults. The purpose of these investigations was to summarize the relative tectonic activity for each structure of concern, evaluate fault rupture parameters, and delineate the locations of possible fault crossings of the proposed pipeline route"-- Summary and conclusions.


InSAR Imaging of Aleutian Volcanoes

InSAR Imaging of Aleutian Volcanoes
Author: Zhong Lu
Publisher: Springer Science & Business Media
Total Pages: 411
Release: 2014-03-31
Genre: Science
ISBN: 3642003486

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Interferometric synthetic aperture radar (InSAR) is a relatively new remote sensing tool that is capable of measuring ground-surface deformation with centimeter-to-subcentimeter precision at a spatial resolution of tens of meters over an area of hundreds to thousands of square kilometers. With its global coverage and all-weather imaging capability, InSAR has become an increasingly important technique for studying volcanoes in remote regions such as the Aleutian Islands. The spatial distribution of surface deformation data derived from InSAR images enables the construction of detailed mechanical models to enhance the study of magmatic processes. InSAR Imaging of Aleutian Volcanoes: • Provides a theoretical framework for InSAR observations and capabilities • Discusses state-of-the-art InSAR analysis techniques • Describes the structure, eruptive history, and magma composition of volcanoes along the entire Aleutian arc • Presents conceptual models for the magma plumbing systems of Aleutian volcanoes based on InSAR results combined with geophysical, geological and geochemical observations. • Synthesizes observations of deformation along the Aleutian arc and compares those results to other active arcs around the world. • Is illustrated throughout with high-resolution color satellite radar images


Glacially-Triggered Faulting

Glacially-Triggered Faulting
Author: Holger Steffen
Publisher: Cambridge University Press
Total Pages: 461
Release: 2021-12-16
Genre: Science
ISBN: 1108806449

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Glacially triggered faulting describes movement of pre-existing faults caused by a combination of tectonic and glacially induced isostatic stresses. The most impressive fault-scarps are found in northern Europe, assumed to be reactivated at the end of the deglaciation. This view has been challenged as new faults have been discovered globally with advanced techniques such as LiDAR, and fault activity dating has shown several phases of reactivation thousands of years after deglaciation ended. This book summarizes the current state-of-the-art research in glacially triggered faulting, discussing the theoretical aspects that explain the presence of glacially induced structures and reviews the geological, geophysical, geodetic and geomorphological investigation methods. Written by a team of international experts, it provides the first global overview of confirmed and proposed glacially induced faults, and provides an outline for modelling these stresses and features. It is a go-to reference for geoscientists and engineers interested in ice sheet-solid Earth interaction.


Fission-Track Thermochronology and its Application to Geology

Fission-Track Thermochronology and its Application to Geology
Author: Marco G. Malusà
Publisher: Springer
Total Pages: 393
Release: 2018-07-14
Genre: Science
ISBN: 3319894218

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This book is focused on the basics of applying thermochronology to geological and tectonic problems, with the emphasis on fission-track thermochronology. It is conceived for relatively new practitioners to thermochronology, as well as scientists experienced in the various methods. The book is structured in two parts. Part I is devoted to the fundamentals of the fission-track method, to its integration with other geochronologic methods, and to the basic principles of statistics for fission-track dating and sedimentology applied to detrital thermochronology. Part I also includes the historical development of the technique and thoughts on future directions. Part II is devoted to the geological interpretation of the thermochronologic record. The thermal frame of reference and the different approaches for the interpretation of fission-track data within a geological framework of both basement and detrital studies are discussed in detail. Separate chapters demonstrate the application of fission-track thermochronology from various perspectives (e.g., tectonics, petrology, stratigraphy, hydrocarbon exploration, geomorphology), with other chapters on the application to basement rocks in orogens, passive continental margins and cratonic interiors, as well as various applications of detrital thermochronology.


Bering Glacier

Bering Glacier
Author: Robert Allan Shuchman
Publisher: Geological Society of America
Total Pages: 402
Release: 2010
Genre: Science
ISBN: 0813724627

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Bering Glacier is the largest surging glacier in the world, having surged at least six times in the last 150 years. With the glacier advancing and retreating as much as 10 km over a surge cycle, it is one of the most physically and biologically dynamic places on Earth. This monograph presents the results of a comprehensive and diverse series of field studies and science investigations at Bering Glacier. The results reported are from a wide range of disciplines, including glaciology, geology, paleogeology, hydrology, limnology, oceanography, tectonics, geomorphology, geophysics, meteorology, remote sensing, climate change, anthropology, and ecological studies pertaining to vegetation, fish, and marine mammals. The compilation of these individual studies into a single publication allows for a more complete understanding of how the approximately 5,000 km2 Bering Glacier system plays a major role in the greater southeastern coastal region of Alaska and through its wastage, its impact on the circulation of the northeast Pacific Ocean and on the global sea level.


Active Global Seismology

Active Global Seismology
Author: Ibrahim Cemen
Publisher: John Wiley & Sons
Total Pages: 305
Release: 2017-04-03
Genre: Science
ISBN: 1118944984

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Neotectonics involves the study of the motions and deformations of the Earth's crust that are current or recent in geologic time. The Mediterranean region is one of the most important regions for neotectonics and related natural hazards. This volume focuses on the neotectonics of the Eastern Mediterranean region, which has experienced many major extensive earthquakes, including the devastating Izmit, Turkey earthquake on August 17, 1999. The event lasted for 37 seconds, killing around 17,000 people, injuring 44,000 people, and leaving approximately half a million people homeless. Since then, several North American, European, and Turkish research groups have studied the neotectonics and earthquake potential of the region using different geological and geophysical methods, including GPS studies, geodesy, and passive source seismology. Some results from their studies were presented in major North American and European geological meetings. This volume highlights the work involving the Eastern Mediterranean region, which has one of the world's longest and best studied active strike-slip (horizontal motion) faults: the east-west trending North Anatolian fault zone, which is very similar to the San Andreas fault in California. This volume features discussions of: Widespread applications in measuring plate motion that have strong implications in predicting natural disasters like earthquakes, both on a regional and a global scale Recent motions, particularly those produced by earthquakes, that provide insights on the physics of earthquake recurrence, the growth of mountains, orogenic movements, and seismic hazards Unique methodical approaches in collecting tectonophysical data, including field, seismic, experimental, computer-based, and theoretical approaches. Active Global Seismology is a valuable resource for geoscientists, particularly in the field of tectonophysics, geophysics, geodynamics, seismology, structural geology, environmental geology, and geoengineering. Read an interview with the editors to find out more: https://eos.org/editors-vox/neotectonics-and-earthquake-forecasting


Active Faults of the World

Active Faults of the World
Author: Robert Yeats
Publisher: Cambridge University Press
Total Pages: 923
Release: 2012-04-26
Genre: Science
ISBN: 1107375606

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Providing the first worldwide survey of active earthquake faults, this book focuses on those described as 'seismic time bombs' – with the potential to destroy large cities in the developing world such as Port au Prince, Kabul, Tehran and Caracas. Leading international earthquake expert, Robert Yeats, explores both the regional and plate-tectonic context of active faults, providing the background for seismic hazard evaluation in planning large-scale projects such as nuclear power plants or hydroelectric dams. He also highlights work done in more advanced seismogenic countries like Japan, the United States, New Zealand and China, providing an important basis for upgrading building standards and other laws in developing nations. The book also explores the impact of major quakes on social development through history. It will form an accessible reference for analysts and consulting firms, and a convenient overview for academics and students of geoscience, geotechnical engineering and civil engineering, and land-use planning.