Results 51 to 60 of about 1,257 (218)

Data on unveiling the occurrence of transient, multi-contaminated mafic magmas inside a rhyolitic reservoir feeding an explosive eruption (Nisyros, Greece)

Data in Brief, 2022
This data article includes the description and the geochemical and mineralogical dataset of 67 pyroclastic rock samples from the Upper Pumice (UP) explosive activity of Nisyros volcano (eastern South Aegean Active Volcanic Arc).
F. Mastroianni, E. Braschi, M. Casalini, S. Agostini, S. Di Salvo, G. Vougioukalakis, L. Francalanci   +6 more
doaj   +1 more source

Genetic and Ecological Management of Pacific Salmon Fisheries for the 21st Century

Fisheries Management and Ecology, EarlyView.
ABSTRACT Based on ecological adaptation theory, tremendous effort is being spent on measures that are eliminating salmon hatcheries and fishing opportunities with the intention of protecting wild runs deemed to be of particular genetic importance to the survival of the species.
Randall E. Brummett, Ian G. Cowx, Devin M. Bartley   +2 more
wiley   +1 more source

Interactions between pyroclastic density currents : insights from analog experiments [PDF]

, 2018
During some explosive volcanic eruptions, multiple pyroclastic density currents have been produced within a short time span of each other and flowed through the same area.
O'Donnell, Sean Bryan
core   +1 more source

Unraveling pyroclastic density current dynamics with multiparameter geophysical sensing

Communications Earth & Environment
Detecting, locating, and characterising the dynamics of destabilised volcanic material is critical for assessing the extreme hazards posed by volcanic mass flows, such as pyroclastic density currents.
Francesco Biagioli, Jean-Philippe Métaxian, Eléonore Stutzmann, Pascal Bernard, Giorgio Lacanna, Anne Mangeney, Giacomo Ulivieri, Gilda Risica, Alister Trabattoni, Marc Peruzzetto, Lorenzo Innocenti, Maurizio Ripepe   +11 more
doaj   +1 more source

Integration of Remote Sensing and Offshore Geophysical Data for Monitoring the Short-Term Morphological Evolution of an Active Volcanic Flank: A Case Study from Stromboli Island

Remote Sensing, 2022
The Sciara del Fuoco (SdF) collapse scar at Stromboli is an active volcanic area affected by rapid morphological changes due to explosive/effusive eruptions and mass-wasting processes.
Daniele Casalbore, Federico Di Traglia, Claudia Romagnoli, Massimiliano Favalli, Teresa Gracchi, Carlo Tacconi Stefanelli, Teresa Nolesini, Guglielmo Rossi, Matteo Del Soldato, Irene Manzella, Paul Cole, Nicola Casagli, Francesco Latino Chiocci   +12 more
doaj   +1 more source

Resolving Micrometre‐Scale Zircon Growth in Silicic Systems by 7 μm LA‐MC‐ICP‐MS U‐Pb Dating: Linking Petrology and Geochronology in Silicic Volcanic and Granitic Rocks from Victoria, Australia

Geostandards and Geoanalytical Research, EarlyView.
Key Points 7 μm spot‐diameter LA‐MC‐ICP‐MS analyses yield accurate zircon U‐Pb ages. 1013 Ω amplifier resistors improve low‐signal Pb measurements. Saturn correction protocols minimise down‐hole fractionation effects. We present a systematic evaluation of high spatial‐resolution zircon U‐Pb dating using a Thermo Scientific Neoma multi‐collector ICP‐MS ...
Cristiano Lana, John D. Clemens
wiley   +1 more source

Meandering flow of a pyroclastic density current documented by the Anisotropy of Magnetic

, 2008
A pattern of shifting current direction is revealed by the anisotropy of magnetic susceptibility (AMS) in the quartz latite ignimbrite associated with the Pleistocene Cimini dome complex in central Italy.
CAS R. A. F., LA BERGE R. D., PORRECA, MASSIMILIANO, LA BERGE R. D, PORRECA M, GIORDANO, Guido, CAS R., MATTEI, Massimo   +7 more
core   +1 more source

A review of the supercritical state of eruption‐fed volcanic density currents in subaerial and subaqueous settings

Sedimentology, EarlyView.
ABSTRACT Subaerial Pyroclastic Density Currents (PDCs) and Subaqueous Eruption‐Fed Density Currents (SEFDCs) produced during volcanic eruptions can present major hazards to surrounding communities and ecosystems. The bedforms deposited by these volcanic density currents can provide insights into the nature of transport and depositional processes, which
Shannon E. Frey, Martin Jutzeler, Rebecca J. Carey   +2 more
wiley   +1 more source

Effect of particle entrainment on the runout of pyroclastic density currents [PDF]

Journal of Geophysical Research: Solid Earth, 2016
AbstractPyroclastic density currents (PDCs) can erode soil and bedrock, yet we currently lack a mechanistic understanding of particle entrainment that can be incorporated into models and used to understand how PDC bulking affects runout. Here we quantify how particle splash, the ejection of particles due to impact by a projectile, entrains particles ...
Fauria, Kristen E, Manga, Michael, Chamberlain, Michael   +2 more
openaire   +3 more sources

Identifying and Interpreting Stratification in Sedimentary Rocks on Mars: Insight from Rover and Orbital Observations and Terrestrial Field Analogs [PDF]

, 2013
Sedimentary rocks on Mars provide insight into past aqueous and atmospheric processes, climate regimes, and potential habitability. The stratigraphic architecture of sedimentary rocks on Mars is similar to that of Earth, indicating that the processes ...
Edgar, Lauren Ashley
core   +1 more source