Global ETD Search
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Showing 1 to 20 of 89 for “"Himalaya"”.
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Quantifying crystalline exhumation in the Himalaya
… most spectacular orogenic belt in the world: the Himalaya. The specific area investigated was the Kaghan Valley in Pakistan (NW Himalaya). Following closure of the Tethyan Ocean by ca. 55-50 Ma, the northward subduction of the leading edge of India beneath the Eurasian Plate and subsequent …
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Climate variability and glacial dynamics in the Himalaya
In den Hochgebirgen Asiens bedecken Gletscher eine Fläche von ungefähr 115,000 km² und ergeben damit, neben Grönland und der Antarktis, eine der größten Eisakkumulationen der Erde. Die Sensibilität der Gletscher gegenüber Klimaschwankungen macht sie zu wertvollen paläoklimatischen Archiven in …
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Geochemical Insights into Crustal Melting in the Bhutan Himalaya
… crustal and tectonic evolution. In the Himalaya, multiple Oligocene-Miocene leucogranite bodies intrude the Greater Himalayan Series (GHS), a lithotectonic package of high-grade metamorphosed sediments. This package is underthrust by a chemically distinct metasedimentary package, the …
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Tectonics of the southern Annapurna Range, central Nepal Himalaya
… emerged to explain the tectonic evolution of the Himalayan thrust belt. Basic aspects of the geology of the range remain relatively poorly known, however, limiting the accuracy of dynamic and kinematic models. For example, the location of a mega-thrust now exposed in the interior of the range, the …
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Agroforesterie en Himalaya : gouvernance et stratégies d’adaptation aux changements climatiques
… avec plus des deux tiers de la population de l'Himalaya dépendant directement de l’agriculture, les pratiques agroforestières sont de plus en plus reconnues pour leur capacité à générer des bénéfices économiques, environnementaux et sociaux. En effet, l’agroforesterie puise dans les principes de …
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Global Digital Elevation Model Accuracy Assessment in the Himalaya, Nepal
<p>Digital Elevation Models (DEMs) are digital representations of surface topography or terrain. Collection of DEM data can be done directly through surveying and taking ground control point (GCP) data in the field or indirectly with remote sensing using a variety of techniques. The accuracies of …
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The timing of prograde metamorphism in the Garhwal Himalaya, India
The Himalaya provide the most significant example of present-day orogenesis and consequently have been extensively studied to gain an understanding of the principle controls on the response of the crust to continental collision. However, our understanding of the prograde metamorphic evolution of …
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Magmatic And Tectonic Evolution Of Southern Tibet And The Himalaya
The Himalaya-Tibetan orogen has become the paradigm for continental collision and is central to deciphering continental tectonics. Neogene extension in the orogen is not predicted by plate tectonic theory, and its significance is widely debated.<br></br><br></br>In the Himalaya, north-south …
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Reviving Dams: A Relational Technopolitics of Hydropower in the Himalaya
… and governments in the Global South. The Himalayan region is one of the most iconic sites for contemporary mega-dam infrastructure development, despite ecological precarity, concerns around the increasing intensity and frequency of infrastructure hazards, and dam costs and debt. This …
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Assessing vulnerability and multi-hazard risk in the Nepal Himalaya
… mountainous country spanning the central Himalayan region, has about 28 million inhabitants in 147,181 square kilometers. Nepal is exposed to a multitude of natural hazards, requiring individuals and communities to interact with and make decisions on risk acceptability on a day-to-day …
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Seasonal precipitation, river discharge, and sediment flux in the western Himalaya
Rainfall, snow-, and glacial melt throughout the Himalaya control river discharge, which is vital for maintaining agriculture, drinking water and hydropower generation. However, the spatiotemporal contribution of these discharge components to Himalayan rivers is not well understood, mainly because …
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Tectonic and climatic controls on orogenic processes : the Northwest Himalaya, India
… and tectonics controlling the development of the Himalaya is a matter of current debate. The distribution of precipitation is thought to control surface erosion, which in turn results in tectonic exhumation as an isostatic compensation process. Alternatively, subsurface structures can have …
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Tectonic evolution of the Thakkahola Graben and Dhaulagiri Himalaya, Central Nepal
… fault systems intersect in the central Nepal Himalaya: the South Tibetan fault system (STFS); the Thakkhola graben; and structures bounding the Upper Mustang Massif (UMM). Interactions between these systems are investigated using integrated field studies, remote sensing analyses, geodynamic …
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The role of extension during the evolution of the NW Indian Himalaya
… Related to the India-Eurasia collision, the Himalaya forms the southern margin of the Tibetan Plateau and constitutes the most prominent Cenozoic type example of a collisional orogen. While thrusting is presently observed along the foothills of the orogen, several generations of extensional …
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Deep structure of the Himalaya and Tibet from gravity and seismological data
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1986.
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Geomorphic and thermochronologic signatures of active tectonics in the central Nepalese Himalaya
The central Nepalese Himalaya are characterized by a sharp transition in physiography that does not correlate with previously mapped faults. Rates of rock uplift, erosion, and exhumation for rocks surrounding this physiographic transition are investigated using digital topographic data, ⁴⁰Ar/³⁹Ar …
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Structural constraints on the exhumation of the Tso Morari Dome, NW Himalaya
… affinity. As one of only two localities in the Himalaya where ultrahigh-pressure rocks have been found, the culmination offers important insights into the orogenic processes responsible for exhumation of subducted continental crust. New, 1:50,000 scale geologic mapping and structural analysis in …
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Participatory Design in the Himalaya: Understanding Himalayan Home Cooking and Heating Practices
Communities in the Himalaya continue to use biomass-fueled cooking and heating arrangements, which have the potential to introduce harmful levels of household air pollution (HAP) and use fuels inefficiently. Utilizing participatory design practices, fifteen surveys were conducted in three villages …
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