Download or read book Crustal Structure of Northeast Tibet from Wide angle Reflection and Refraction Velocity Modelling written by Kieran Kraus and published by . This book was released on 2015 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crustal Structure and Tectonics of Northeast Tibet from Controlled Source and Broadband Seismology written by Marianne Sherman Karplus and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation I present my contributions to our understanding of three-dimensional crustal structure and plateau growth in the north Tibetan Plateau from the Qiangtang terrane to the Qaidam Basin. Tibet is an ideal location to study plateau development processes in an active continent-continent collision zone. Recent seismic projects have collected an abundance of seismic data in north Tibet, and I use a range of active- and passive-source seismic data to investigate tectonic processes in that area. In particular, I look at how north Tibet is deforming in response to the India-Asia collision including whether there may be mid-or lower-crustal flow within the plateau. I further probe the causes of crustal thickness changes across the plateau and whether the plateau is actively growing. I also ask whether there is present-day subduction of Eurasia beneath north Tibet and what role the Kunlun strike-slip fault plays in the regional tectonics. I derive a velocity model from wide-angle reflection and refraction data using a high-resolution, 270-km active-source seismic profile crossing the Kunlun Mountains and south Qaidam Basin. The central Qaidam Basin resembles average continental crust, whereas the Songpan-Ganzi terrane and East Kunlun Mountains exhibit thickened, lower-velocity crust also characteristic of southern Tibet. Using that method along with P-wave receiver function imaging, I describe details of the crustal thickness change from 70 km beneath the Kunlun Mountains to 50 km beneath central Qaidam. In contrast to previous work, I relocate the change in crustal thickness to ~45 km north of the Kunlun Mountains topographic front, in a region of overlapping bright Moho reflectors at ~70 km and ~50 km. The crustal thickness change is unrelated to the strike-slip North Kunlun Fault. I further discuss differences in Vp/Vs across the terranes and calculate the Vp/Vs of the lower crustal material between the deep and shallow Mohos. Crustal velocities and impedance contrasts suggest that instead weak Tibetan lower crust is injected northward beneath stronger Qaidam crust without southward subduction of Eurasian lithosphere. Finally, at the broadest scale, I use ambient noise tomography to map regional differences in crustal Rayleigh wave group velocities across a larger area of north Tibet including the Qiangtang terrane. For periods of 8-24 s (sampling from ~10-35 km depth within the crust), I observe striking velocity changes at the major east-west Bangong-Nujiang and Jinsha suture zones as well as the Kunlun-Qaidam boundary. I see higher velocities beneath the Lhasa terrane, lower velocities beneath the Qiangtang, then higher velocities in the Songpan-Ganzi, and finally low velocities beneath the Qaidam Basin. Mid-to-upper crustal velocities also change laterally within the Songpan-Ganzi terrane, perhaps indicating subterrane boundaries, as hypothesized previously from geologic data. No velocity change is observed at the active North Kunlun Fault for periods 8-12 s, but for periods 18-24 s (~20-35 km depth) the wedge of Songpan-Ganzi crust between the South and North Kunlun Faults appears lower velocity than the surrounding Songpan-Ganzi terrane and Kunlun Mountains. Velocities west of ~93° E appear higher velocity than the Songpan-Ganzi terrane to the east. Finally, much of north Tibet (~ 32°-36° N) is underlain by a low velocity zone (LVL) at ~20-30 km depth.
Download or read book Treatise on Geophysics written by and published by Elsevier. This book was released on 2015-04-17 with total page 5604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatise on Geophysics, Second Edition, is a comprehensive and in-depth study of the physics of the Earth beyond what any geophysics text has provided previously. Thoroughly revised and updated, it provides fundamental and state-of-the-art discussion of all aspects of geophysics. A highlight of the second edition is a new volume on Near Surface Geophysics that discusses the role of geophysics in the exploitation and conservation of natural resources and the assessment of degradation of natural systems by pollution. Additional features include new material in the Planets and Moon, Mantle Dynamics, Core Dynamics, Crustal and Lithosphere Dynamics, Evolution of the Earth, and Geodesy volumes. New material is also presented on the uses of Earth gravity measurements. This title is essential for professionals, researchers, professors, and advanced undergraduate and graduate students in the fields of Geophysics and Earth system science. Comprehensive and detailed coverage of all aspects of geophysics Fundamental and state-of-the-art discussions of all research topics Integration of topics into a coherent whole
Download or read book 25th Himalaya Karakoram Tibet Workshop written by and published by . This book was released on 2010 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Reflection and Tectonic Studies of the Central Himalayas Southern Tibet written by Michael Lee Hauck and published by . This book was released on 1997 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploring the Earth s Crust written by C. Prodehl and published by Geological Society of America. This book was released on 2012 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume contains a comprehensive, worldwide history of seismological studies of the Earth's crust using controlled sources from 1850 to 2005. Essentially all major seismic projects on land and the most important oceanic projects are covered. The time period 1850 to 1939 is presented as a general synthesis, and from 1940 onward the history and results are presented in separate chapters for each decade, with the material organized by geographical region. Each chapter highlights the major advances achieved during that decade in terms of data acquisition, processing technology, and interpretation methods. For all major seismic projects, the authors provide specific details on field observations, interpreted crustal cross sections, and key references. They conclude with global and continental-scale maps of all field measurements and interpreted Moho contours. An accompanying DVD contains important out-of-print publications and an extensive collection of controlled-source data, location maps, and crustal cross sections."--Publisher's description.
Download or read book Seismology and Structure of the Earth written by Barbara Romanowicz and published by Elsevier. This book was released on 2010-04-20 with total page 873 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatise on Geophysics: Seismology and Structure of the Earth, Volume 1, provides a comprehensive review of the state of knowledge on the Earths structure and earthquakes. It addresses various aspects of structural seismology and its applications to other fields of Earth sciences. The book is organized into four parts. The first part principally covers theoretical developments and seismic data analysis techniques from the end of the nineteenth century until the present, with the main emphasis on the development of instrumentation and its deployment. The second part reviews the status of knowledge on the structure of the Earths shallow layers, starting with a global review of the Earth's crustal structure. The third part focuses on the Earth's deep structure, divided into its main units: the upper mantle, the transition zone and upper-mantle discontinuities, the D region at the base of the mantle, and the Earth's core. The fourth part comprises two chapters which discuss constraints on Earth structure from fields other than seismology: mineral physics and geodynamics. Self-contained volume starts with an overview of the subject then explores each topic with in depth detail Extensive reference lists and cross references with other volumes to facilitate further research Full-color figures and tables support the text and aid in understanding Content suited for both the expert and non-expert
Download or read book Tibetan Plateau Uplift and Environmental Impacts New Progress and Perspectives written by Yibo Yang and published by Frontiers Media SA. This book was released on 2022-10-20 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Ray Theory written by V. Cerveny and published by Cambridge University Press. This book was released on 2001-07-02 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive treatment of the seismic ray method; an invaluable advanced textbook and reference volume.
Download or read book Encyclopedia of Solid Earth Geophysics written by Harsh Gupta and published by Springer Science & Business Media. This book was released on 2011-06-29 with total page 1579 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past few decades have witnessed the growth of the Earth Sciences in the pursuit of knowledge and understanding of the planet that we live on. This development addresses the challenging endeavor to enrich human lives with the bounties of Nature as well as to preserve the planet for the generations to come. Solid Earth Geophysics aspires to define and quantify the internal structure and processes of the Earth in terms of the principles of physics and forms the intrinsic framework, which other allied disciplines utilize for more specific investigations. The first edition of the Encyclopedia of Solid Earth Geophysics was published in 1989 by Van Nostrand Reinhold publishing company. More than two decades later, this new volume, edited by Prof. Harsh K. Gupta, represents a thoroughly revised and expanded reference work. It brings together more than 200 articles covering established and new concepts of Geophysics across the various sub-disciplines such as Gravity, Geodesy, Geomagnetism, Seismology, Seismics, Deep Earth Processes, Plate Tectonics, Thermal Domains, Computational Methods, etc. in a systematic and consistent format and standard. It is an authoritative and current reference source with extraordinary width of scope. It draws its unique strength from the expert contributions of editors and authors across the globe. It is designed to serve as a valuable and cherished source of information for current and future generations of professionals.
Download or read book Channel Flow Ductile Extrusion and Exhumation in Continental Collision Zones written by Richard D. Law and published by Geological Society of London. This book was released on 2006 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes sections on: Evolution of ideas on channel flow and ductile extrusion in the Himalaya-Tibetan Plateau system; Modeling channel flow and ductile extrusion processes; Geological constraints on channel flow and ductile extrusion as an important orogenic process in the Himalaya-Tibetan Plateau, the Hellenides and Appalachians, and the Canadian Cordillera.
Download or read book Journal of Geophysical Research written by and published by . This book was released on 2004 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatise on Geophysics Seismology and structure of the Earth written by Gerald Schubert and published by . This book was released on 2007 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Treatise on geophysics is the only comprehensive, state-of-the-art, and integrated summary of the present state of geophysics. Offering an array of articles from some of the top scientists around the world, this 11-volume work deals with all major parts of solid-Earth geophysics, including a volume on the terrestrial planets and moons in our Solar System. This major reference work will aid researchers, advanced undergrad and graduate students, as well as professionals in cutting-edge research.
Download or read book Structure and Tectonics of the Indian Continental Crust and Its Adjoining Region written by Harish C Tewari and published by Elsevier. This book was released on 2018-02-07 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure and Tectonics of the Indian Continental Crust and Its Adjoining Region: Deep Seismic Studies, Second Edition, collates essential data from seismic studies of Earth’s crust across India, offering an essential understanding of the tectonic development of the Indian subcontinent. Seismic studies have been carried out in various parts of India since 1972, recording crust-related seismic data for determination of velocity-depth configuration and determination of structural patterns. The book examines the details of these studies, including their synthesis and global applications. The book presents both background and applications in one cohesive volume for researchers and students of geophysics and geology. Presents all the information and metadata of the Indian continental crust and its neighbouring regions in a cohesive way Provides basic knowledge of the Indian subcontinent to support the discussion of seismic studies related to crustal structure Includes all new chapter covering global applications and synthesis of the findings and observations
Download or read book Petroleum Abstracts written by and published by . This book was released on 1992 with total page 1716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Geophysics written by and published by Academic Press. This book was released on 2011-08-09 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The critically acclaimed serialized review journal for nearly fifty years, Advances in Geophysics is a highly respected publication in the field of geophysics. Since 1952, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now in its 49th volumes, the Serial contains much material still relevant today-truly an essential publication for researchers in all fields of geophysics.
