Results 91 to 100 of about 10,615 (268)

Rheology and Flow Emplacement Processes of the 1954 Lavas, Mount Ngauruhoe

, 2010
The rheology and emplacement dynamics of basaltic and rhyolitic lava flows have been studied extensively, leading to the development of numerous rheological and flow behaviour models; however, the flow dynamics of more intermediate composition lavas ...
Sanders, Fiona
core  

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

SPH Simulation of Molten-Fluid Flows with a Plastic Surface Skin: A Lava-Flow-Oriented Model Study

Applied Sciences
Lava flows represent complex thermofluid phenomena in which surface cooling leads to the formation of a solidified surface layer. Understanding the influence of such a surface layer on fluid flow is an important issue in lava flow modeling.
Shingo Tomita, Takuma Sato, Satoshi Murakami, Joe Yoshikawa, Makoto Sugimoto, Hisaya Komen, Masaya Shigeta   +6 more
doaj   +1 more source

Morphology and dynamics of inflated subaqueous basaltic lava flows

Geochemistry, Geophysics, Geosystems, 2014
During eruptions onto low slopes, basaltic Pahoehoe lava can form thin lobes that progressively coalesce and inflate to many times their original thickness, due to a steady injection of magma beneath brittle and viscoelastic layers of cooled lava that ...
Anne Deschamps, Cécile Grigné, Morgane Le Saout, Samuel Adam Soule, Pascal Allemand, Brigitte Van Vliet‐Lanoe, France Floc'h   +6 more
doaj   +1 more source

Evolution Model for the Paleoproterozoic Talvivaara Mudstone‐Hosted Ni‐Zn‐Cu‐Co Deposit in Fennoscandia

Terra Nova, EarlyView.
ABSTRACT The Paleoproterozoic Talvivaara mudstone is a very large sulfidic Ni‐Co deposit that records enhanced organic matter accumulation during the global Shunga Event. Here, rock geochemistry and microscale S and Fe isotope composition of in situ pyrrhotites and pyrites are studied in well‐characterised, well‐preserved drill core samples.
Raimo Lahtinen, Jaakko J. Laitala, Joonas J. Virtasalo, Martin J. Whitehouse   +3 more
wiley   +1 more source

Vikrahraun-the 1961 basaltic lava flow eruption at Askja, Iceland: morphology, geochemistry, and planetary analogs. [PDF]

Earth Planets Space, 2022
Blasizzo AY, Ukstins IA, Scheidt SP, Graettinger AH, Peate DW, Carley TL, Moritz AJ, Thines JE.   +7 more
europepmc   +1 more source

Anisotropy of Magnetic Susceptibility and Preferred Pore Orientation in Lava Flow from the Ijen Volcanic Complex, East Java, Indonesia

Geosciences, 2019
Anisotropy of magnetic susceptibility (AMS) has been used in various studies related to interpreting the direction of lava flow, some of which have shown ambiguity with regard to the data generated.
Fadhli Ramadhana Atarita, Satria Bijaksana, Nuresi Rantri Desi Wulan Ndari, Aditya Pratama, Reyhan Fariz Taqwantara, Silvia Jannatul Fajar, Fourier Dzar Eljabbar Latief   +6 more
doaj   +1 more source

Seismic Stratigraphy and Geomorphology of Palaeocene Volcanic Rocks, Faroe-Shetland Basin [PDF]

, 2013
2D and 3D seismic reflection data in the Faroe-Shetland Basin have been used to remotely study buried, large-scale Palaeocene volcanic structures emplaced during continental flood basalt volcanism in the Faroe-Shetland Basin.
WRIGHT, KIRSTIE,ANNE-MARIE
core  

Numerical Simulation of Lava Flow

PROCEEDINGS OF HYDRAULIC ENGINEERING, 1990
Lava flows are regared as Bingam fluid and its property is explained by rate process which is shown by Arrhenius formula. Then, viscosity and yield steress are shown by exponential functions of temperature.The 1986 lava flows extruded by the fissuer eruption at lzu-Ooshima were repoduced by numerical calculation of two-dimensional unstady flow.
YAMASHITA, Shintarou, MIYAMOTO, Kuniaki, OOHARA, Mashanori, OTUZUKI, Hideaki, MIZUYAMA, Takahisa   +4 more
openaire   +2 more sources

When the lava meets the sea: emplacement of the 2-4 ka San Bartolo lava flow field, Stromboli volcano (Italy)

International audienceWhen a lava flow enters a body of water, either a lake, sea, river or ocean, explosive interaction may arise. However, when it is an 'a'ā lava flow entering water, a more complex interaction occurs, that is very poorly described and
Drovanti, Lodovico, Gurioli, Lucia, Shajahan, Rasia, Robustelli Test, Claudio, Zanella, Elena, Test, Claudio Robustelli, Harris, Andrew, Harris, Andrew J. L., Calvari, Sonia   +8 more
core   +1 more source