Results 91 to 100 of about 24,812 (309)
DOWNFLOW code and LIDAR technology for lava flow analysis and hazard assessment at Mount Etna
Annals of Geophysics, 2011 The use of a lava-flow simulation (DOWNFLOW) probabilistic code and airborne light detection and ranging (LIDAR) technology are combined to analyze the emplacement of compound lava flow fields at Mount Etna (Sicily, Italy).
Alessandro Fornaciai +2 more
doaj +1 more source
A lava attack on the recovery of sums of dense and sparse signals [PDF]
arXiv, 2015 Common high-dimensional methods for prediction rely on having either a sparse signal model, a model in which most parameters are zero and there are a small number of non-zero parameters that are large in magnitude, or a dense signal model, a model with no large parameters and very many small non-zero parameters.
arxiv
Fitosociología y sucesión en el volcán Paricutín (Michoacan, México)
Caldasia, 1997 A phytosociologic survey of the current vegetation covering the cone and lava flow of Paricutín Volcano was conducted 44 years after eruption. A cluster analysis of a total of 57 relevés was made using a two-way indicator species algorithm, Twinspan ...
Giménez de Azcárate Cornide Joaquín +2 more
doaj
Genesis of primitive Hawaiian rejuvenated-stage lavas: Evidence for carbonatite metasomatism and implications for ancient eclogite source [PDF]
arXiv, 2020 To constrain a contribution of deep carbonated mantle, to fractionation of Hf relative to rare earth elements (REE) in volcanic series, we examine available high-quality data on major, trace element and Nd-Hf isotope compositions of primitive lavas and glasses erupted during preshield, postshield and mostly rejuvenated stage of the Hawaiian hot spot ...
arxiv
Arabian Archaeology and Epigraphy, EarlyView.ABSTRACT Northwest Arabia is marked by tens of thousands of monumental burial structures, most of which appear to have been built during the Bronze Age. These funerary features range from simple cairns and tower tombs through to large ‘pendant’ burials with elaborate tail constructions.
Hugh Thomas +6 more
wiley +1 more source
Archaeometry, EarlyView.Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren +23 more
wiley +1 more source
Chemical evolution of an evaporating lava pool [PDF]
Many known rocky exoplanets are so highly irradiated that their dayside surfaces are molten, and `silicate atmospheres', composed of rock-forming elements, are generated above these lava pools. The compositions of these `lava planet' atmospheres are of great interest because they must be linked to the composition of the underlying rocky interiors.
arxiv +1 more source
IEEE AccessTharsis Montes is the largest volcanic province on Mars, and Ascraeus Mons in its northeastern part is the largest volcano of the province. The material composition of the lava flows and lava plains to the northwest of Ascraeus Mons is important for the ...
Qian Wang, Sixin Liu, Jianfu Ni, Qi Lu
doaj +1 more source
Frontiers in Earth ScienceLava tubes are powerful heat insulators, allowing lava to practically keep the initial temperature and travel longer distances than when freely flowing on the ground surface.
S. Calvari +8 more
doaj +1 more source
The genesis of a lava cave in the Deccan Volcanic Province (Maharashtra, India)
International Journal of Speleology, 2016 Lava tubes and channels forming lava distributaries have been recognized from different parts of western Deccan Volcanic Province (DVP). Openings of smaller dimension have been documented from the pāhoehoe flows around Pune, in the western DVP.
Nikhil R. Pawar +6 more
doaj +1 more source