Results 11 to 20 of about 32,694 (262)

Assessing the Environmental Consequences of the Generation and Alteration of Mafic Volcaniclastic Deposits During Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 117-131., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Benjamin Black   +4 more
wiley  

+3 more sources

Tephra layers in the marine environment: A review of properties and emplacement processes

open access: yesGeological Society Special Publication, 2021
This review focusses on the recognition of volcanic ash occurrences in marine sediment cores and on using their appearance and properties to deduce their origin.
A. Freundt   +3 more
semanticscholar   +1 more source

Reconstruction of submarine eruption processes from FTIR volatile analysis of marine tephra: Example of Oomurodashi volcano, Japan

open access: yesFrontiers in Earth Science, 2022
Tephra layers in marine sediments are widely used to correlate and date paleoclimate and paleoceanography records, and to determine spatiotemporal changes in magmatic evolution and eruption frequency.
Iona M. McIntosh   +5 more
doaj   +1 more source

The Medial Offshore Record of Explosive Volcanism Along the Central to Eastern Aegean Volcanic Arc: 2. Tephra Ages and Volumes, Eruption Magnitudes and Marine Sedimentation Rate Variations

open access: yesGeochemistry Geophysics Geosystems, 2021
We use the tephrostratigraphic framework along the Aegean Volcanic Arc established in Part 1 of this contribution to determine hemipelagic sedimentation rates, calculate new tephra ages, and constrain the minimum magnitudes of (sub)plinian eruptions of ...
S. Kutterolf   +8 more
semanticscholar   +1 more source

Drivers of crop impacts from tephra fallout

open access: yesVolcanica, 2022
Agriculture is an economic and social pillar for the least developed countries. When these regions host volcanoes that exhibit explosive behaviour, a serious risk for agricultural production arises as crops endure various impacts from tephra fall.
Noa Ligot   +2 more
doaj   +1 more source

Tephra Deposition and Bonding With Reactive Oxides Enhances Burial of Organic Carbon in the Bering Sea

open access: yesGlobal Biogeochemical Cycles, 2021
Preservation of organic carbon (OC) in marine sediments exerts a major control on the cycling of carbon in the Earth system. In these marine environments, OC preservation may be enhanced by diagenetic reactions in locations where deposition of fragmental
Jack Longman   +3 more
semanticscholar   +1 more source

Creating a digital database of tephra fallout distribution and frequency in Japan

open access: yesJournal of Applied Volcanology, 2022
Tephra fallout is a potential hazard to livelihoods, critical infrastructure, and health, even in areas that are far from volcanoes. Therefore, it is important to quantitatively evaluate tephra fall hazards for both residents and infrastructure around ...
Shimpei Uesawa   +3 more
doaj   +1 more source

The influence of vegetation cover on the grain-size distributions and thicknesses of two Icelandic tephra layers

open access: yesVolcanica, 2022
Grain-size distributions and thicknesses of tephra layers are used to reconstruct characteristics, dynamics, and hazards of explosive volcanic eruptions, but the extent to which the preservation of tephra is in uenced by depositional environments is ...
Conner Morison, Richard Streeter
doaj   +1 more source

Real-Time Tephra Detection and Dispersal Forecasting by a Ground-Based Weather Radar

open access: yesRemote Sensing, 2021
Tephra plumes can cause a significant hazard for surrounding towns, infrastructure, and air traffic. The current work presents the use of a small and compact X-band multi-parameter (X-MP) radar for the remote tephra detection and tracking of two eruptive
Magfira Syarifuddin   +8 more
doaj   +1 more source

A Computational Methodology for the Calibration of Tephra Transport Nowcasting at Sakurajima Volcano, Japan

open access: yesAtmosphere, 2021
Ground-based remote sensing equipment have the potential to be used for the nowcasting of the tephra hazard from volcanic eruptions. To do so raw data from the equipment first need to be accurately transformed to tephra-related physical quantities.
Alexandros P. Poulidis   +3 more
doaj   +1 more source

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