Results 41 to 50 of about 9,762 (210)

A fuzzy logic methodology for assessing the resilience of past communities to tephra fall: a Laacher See eruption 13,000 year BP case

open access: yesVolcanica, 2018
While volcanologists are experienced in assessing present and past volcanism, and while archaeologists are experts in understanding past societies, the study of how ancient volcanic activity has impacted contemporaneous communities remains little ...
Russell James Blong   +2 more
doaj   +1 more source

Tephrochronology and Provenance of an Early Pleistocene (Calabrian) Tephra From IODP Expedition 374 Site U1524, Ross Sea (Antarctica)

open access: yesGeochemistry, Geophysics, Geosystems, 2021
We present a full characterization of a 20 cm‐thick tephra layer found intercalated in the marine sediments recovered at Site U1524 during International Ocean Discovery Program (IODP) Expedition 374, in the Ross Sea, Antarctica.
A. Di Roberto   +11 more
doaj   +1 more source

Tephra From the 3 March 2015 Sustained Column Related to Explosive Lava Fountain Activity at Volcán Villarrica (Chile)

open access: yesFrontiers in Earth Science, 2018
Exceptionally intense lava fountains at open conduit volcanoes are infrequent, hazardous and little-warned events. Studying their tephra falls may reveal conduit dynamics, eruption source parameters and fragmentation mechanisms.
Jorge E. Romero   +12 more
doaj   +1 more source

Long-term change of the eruption activities of Sakurajima volcano, Japan, inferred from the fallout tephra deposits

open access: yesFrontiers in Earth Science, 2022
Stratigraphic analysis of fallout tephra deposits in and around a volcano provides a framework for understanding the long-term temporal change in the volcano’s activities.
Ayumu Nishihara   +3 more
doaj   +1 more source

Modeling Tephra Fall and Sediment-Water Flows to Assess Their Impacts on a Vulnerable Building Stock in the City of Arequipa, Peru

open access: yesFrontiers in Earth Science, 2022
Arequipa, Peru’s second economic center hosting c. 1,110,000 inhabitants, is the largest South American city exposed to a large variety of natural hazards.
J.-C. Thouret   +7 more
doaj   +1 more source

A review of late Quaternary silicic and some other tephra formations from New Zealand: their stratigraphy, nomenclature, distribution, volume, and age. [PDF]

open access: yes, 1990
The stratigraphic relationships and distribution of 36 named late Quaternary (≤c. 50 000 yr B P.) silicic tephra formations, erupted from 4 volcanic centres—Okataina, Taupo, Maroa, and Tuhua (Mayor Island)—are presented.
Froggatt, Paul C., Lowe, David J.
core   +2 more sources

Temporal variations in discharge rate and component characteristics of tephra-fall deposits during the 2014–2015 eruption of Nakadake first crater, Aso Volcano, Japan

open access: yesEarth, Planets and Space, 2019
The 2014–2015 eruption of the Nakadake first crater at Aso Volcano in southwestern Japan was characterized by continuous ash emissions and intermittent strombolian eruptions.
Yasuo Miyabuchi, Chihoko Hara
doaj   +1 more source

Ice core paleovolcanic records from the St. Elias Mountains, Yukon, Canada [PDF]

open access: yes, 2007
We previously reported a record of regionally significant volcanic eruptions in the North Pacific using an ice core from Eclipse Icefield (St. Elias Mountains, Yukon, Canada).
Germani, Mark S   +4 more
core   +3 more sources

Observations of tephra fall impacts from the 2011 Shinmoedake eruption, Japan [PDF]

open access: yesEarth, Planets and Space, 2013
The 2011 eruption of Shinmoedake, Japan, deposited tephra across Miyazaki prefecture impacting both urban and rural environments. We provide an overview of the impacts, management and recovery of a modern city, infrastructure networks and a diverse agricultural region following this moderate sized explosive eruption, focusing on four key sectors ...
Magill, Christina   +2 more
openaire   +1 more source

Reconstruction of the 29th December 2013 Eruption of San Miguel Volcano, El Salvador, using Video, Photographs and Pyroclastic Deposits

open access: yesVolcanica, 2022
San Miguel (or Chaparrastique) volcano, El Salvador, erupted on the 29th December 2013, after almost 40 years of quiescence. Initial vent-clearing explosions ejected ballistic blocks and produced a pyroclastic density current (PDC) that flowed down the ...
Richard James Brown   +6 more
doaj   +1 more source

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