Results 71 to 80 of about 29,714 (250)
Earth, Planets and SpaceDiscrete explosive eruptions, including vulcanian eruptions, occur at various stages during the effusion of viscous lava. However, the differences in occurrence time and mechanisms are not yet well understood or categorized.
Takayuki Kaneko +5 more
doaj +1 more source
Why Deep-Water Eruptions Are So Different From Subaerial Eruptions
Frontiers in Earth Science, 2018 Magmas erupted in deep-water environments (>500 m) are subject to physical constraints very different to those for subaerial eruptions, including hydrostatic pressure, bulk modulus, thermal conductivity, heat capacity and the density of water mass ...
Raymond A. F. Cas +2 more
doaj +1 more source
Can riots represent? A democratic theory
American Journal of Political Science, EarlyView.Abstract Political theory has been perennially concerned with interrogating, identifying, and clarifying the political functions of riots. Yet, political theorists have mostly fallen short of explaining the relationship between riots and democracy, although this is central to the democratic theory of contestation and crucial for evaluating the ...
Alexis Bibeau‐Gagnon
wiley +1 more source
Ice core evidence for a second volcanic eruption around 1809 in the Northern Hemisphere [PDF]
, 2006 A volcanic signal observed in ice cores from both polar regions six years prior to Tambora is attributed to an unknown tropical eruption in 1809. Recovery of dacitic tephra from the 1809 horizon in a Yukon ice core (Eclipse) that is chemically distinct ...
Germani, Mark S +4 more
core +3 more sources
Electoral responses to economic crises
American Journal of Political Science, EarlyView.Abstract How do voters respond to economic crises: Do they turn against the incumbent, reward a certain political camp, polarize to the extremes, or perhaps continue to vote much like before? Analyzing extensive data on electorates, parties, and individuals in 24 countries for over half a century, we document a systematic pattern whereby economic ...
Yotam Margalit, Omer Solodoch
wiley +1 more source
Dynamics of coupled diffusive and decompressive bubble growth in magmatic systems [PDF]
, 1996 Bubble growth in an ascending parcel of magma is controlled both by diffusion of oversaturated volatiles and decompression as the magma rises. We have developed a numerical model which explores the processes involved in water exsolution from basaltic and
Prusevich, Alexander A. +1 more
core +1 more source
A 100-year record of North Pacific volcanism in an ice core from Eclipse icefield, Yukon Territory, Canada [PDF]
, 2003 A record of regionally significant volcanic eruptions in the North Pacific over the last century has been developed using a glaciochemical record from Eclipse Icefield, Yukon Territory, Canada.
Germani, Mark S +2 more
core +3 more sources
Archaeometry, EarlyView.ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant +6 more
wiley +1 more source
Observations of the altitude of the volcanic plume during the eruption of Eyjafjallajökull, April–May 2010 [PDF]
Earth System Science Data, 2011 The eruption of Eyjafjallajökull volcano in 2010 lasted for 39 days, 14 April–23 May. The eruption had two explosive phases separated by a phase with lava formation and reduced explosive activity.
P. Arason, G. N. Petersen, H. Bjornsson
doaj +1 more source
Ash plume properties retrieved from infrared images: a forward and inverse modeling approach
, 2014 We present a coupled fluid-dynamic and electromagnetic model for volcanic ash plumes. In a forward approach, the model is able to simulate the plume dynamics from prescribed input flow conditions and generate the corresponding synthetic thermal infrared (
Cerminara, Matteo +3 more
core +3 more sources