Shield Volcanoes
Shield Volcanoes - Related Videos
07:58
Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
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Cited by 3 •
2017
Three-dimensional (3D) reflection seismology is a powerful method for imaging subsurface volcanoes. By using industrial 3D seismological data from the Tarim Basin, we illustrate how to extract the sills and the conduits of subsurface volcanoes from seismic data cubes.
01:14
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current
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2024
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
05:56
Construction of a Compact Low-Cost Radiation Shield for Air-Temperature Sensors in Ecological Field Studies
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Cited by 8 •
2018
With the advent of small, low-cost environmental sensors, it is now possible to deploy high-density networks of sensors to measure hyper localized temperature variation. Here, we provide a detailed methodology for constructing a compact version of a previously described custom-fabricated radiation shield for use with inexpensive thermochrons.
08:14
Combined Genetic and Chemical Capsid Modifications of Adenovirus-Based Gene Transfer Vectors for Shielding and Targeting
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Cited by 9 •
2018
The protocol described here enables researchers to specifically modify adenovirus capsids at selected sites by simple chemistry. Shielded adenovirus vectors particles and retargeted gene transfer vectors can be generated, and vector host interactions can be studied.
07:28
Igneous Volcanic Rock
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2023
Source: Laboratory of Alan Lester - University of Colorado Boulder Igneous rocks are the products of cooling and crystallization of magma. Volcanic rocks are a particular variety of igneous rock, forming as a consequence of magma breaching the surface, then cooling and crystallizing in the subaerial environment. Magma is molten rock that typically ranges in temperature from approximately 800 °C to 1,200 °C (Figure 1). Magma itself is produced within the Earth via three primary melting...
FAQs
Their gentle profile reflects the behavior of low-viscosity basaltic lava during repeated eruptions. Because the lava flows readily, it can spread outward across considerable distances before cooling, adding thin layers over broad areas. This distribution of material produces gradual, extensive growth rather than concentrating volcanic deposits close to a single steep summit.
Lava viscosity controls how easily molten material moves and how far it can travel before solidifying. In shield volcanoes, low-viscosity basaltic lava commonly forms thin, extensive flows, so successive eruptions modify large areas of terrain. This relationship helps scientists connect magma properties with volcanic landform shape and long-term landscape evolution.
Volcanic gas release represents an environmental hazard that must be considered alongside lava inundation. Although flowing lava reshapes terrain directly, released gases can affect surrounding environmental conditions and influence hazard interpretation. Including both processes gives scientists a more complete basis for evaluating how eruptions affect ecosystems, landscapes, and nearby human land use.
Studies of these volcanoes connect several lines of interpretation: magma composition, eruption behavior, landscape evolution, and environmental change. The resulting landforms and lava deposits provide context for understanding how repeated eruptions reshape terrain. In Environmental Sciences, this perspective links geologic processes with habitat alteration, soil development, hazards, and changing patterns of human land use.
Lava flows can add newly formed volcanic material to the landscape, creating new land as eruptions build outward over time. That physical change can replace or reshape existing habitats and alter the environments available to organisms. Consequently, shield volcanoes provide useful settings for examining how geologic activity reorganizes ecosystems and environmental conditions.
Repeated lava emplacement changes the underlying landscape on which later environmental processes occur, making shield volcanoes relevant to soil development. Their eruptions can also reshape areas used by people, producing conflicts or adjustments in human land use. Studying these linked effects helps place volcanic activity within a broader environmental assessment rather than treating it as only a geologic event.