Results 121 to 130 of about 304,697 (314)

Eruptions from Under-Ice Explosions [PDF]

, 1988
Abstract : Eruptions from under-ice explosions were recorded by a standard video camera and an ordinary motor-driven 35-mm camera. The records give the dimensions and velocities of the eruptions. Velocity, diameter, and height are related to charge depth and the results are compared with data for ordinary underwater explosions in ice-free water.
David L'Heureux, Malcolm Mellor
openaire   +2 more sources

European Green Deal and Geopoliticisation of Trade: A Poststructuralist Discourse Analysis of EU Agricultural Trade Policy

JCMS: Journal of Common Market Studies, EarlyView.
Abstract Drawing on Laclau and Mouffe's poststructuralist discourse theory, this article critically examines the von der Leyen Commission's agricultural trade policy under the European Green Deal. It elucidates the shift from a dominant neoliberal trade logic to open strategic autonomy, positioning agricultural trade as a foreign policy instrument. The
Mari Carlson
wiley   +1 more source

TWO-DIMENSIONAL SIMULATIONS OF EXPLOSIVE ERUPTIONS OF KICK-EM JENNY AND OTHER SUBMARINE VOLCANOS [PDF]

Science of Tsunami Hazards, 2006
Kick-em Jenny, in the Eastern Caribbean, is a submerged volcanic cone that has erupted a dozen or more times since its discovery in 1939. The most likely hazard posed by this volcano is to shipping in the immediate vicinity (through volcanic missiles or ...
Galen Gisler, Robert Weaver, Michael L. Gittings   +2 more
doaj  

Periodontitis and Periodontal Conditions in Systemically Healthy Children and Adolescents

Journal of Clinical Periodontology, EarlyView.
ABSTRACT Objective To answer the PICoS question ‘in systemically healthy children and adolescents (Population), what are the main features of periodontitis, necrotising periodontal diseases (NPD) and other periodontal conditions (periodontal abscesses, endo‐periodontal lesions, traumatic occlusal forces, prosthesis‐ and tooth‐related factors ...
Inbar Eshkol‐Yogev, Nagore Ambrosio, Cheryl Somani, Elena Figuero, Lior Shapira, Janet Davies   +5 more
wiley   +1 more source

Halogen (Cl, F) release during explosive, effusive, and intrusive phases of the 2011 rhyolitic eruption at Cordón Caulle volcano (Chile)

Volcanica, 2019
We investigate sulphur, chlorine and fluorine release during explosive, effusive and intrusive phases the 2011 Cordón Caulle eruption, with a focus on halogen devolatilization. Petrological analysis shows halogen release to have been promoted by isobaric
C Ian Schipper, Jonathan M Castro, Ben M Kennedy, Bruce W Christenson, Alessandro Aiuppa, Brent Alloway, Pablo Forte, Gilles Seropian, Hugh Tuffen   +8 more
doaj   +1 more source

The nature and formation of silica minerals in eucrite meteorites: Insight into the protoplanetary magma crystallization

Meteoritics &Planetary Science, EarlyView.
Abstract Silica polymorphs in meteorites provide critical constraints on crystallization processes associated with thermal activity in the early solar system. A detailed investigation of silica polymorphs in eucrites (the largest group of achondrites) using cathodoluminescence imaging and laser‐Raman spectroscopy revealed significant variations in the ...
Rei Kanemaru, Akira Yamaguchi, Naoya Imae, Ryoga Maeda, Makoto Kimura, Kenji Horie, Takashi Mikouchi, Masaaki Miyahara, Masahiro Yasutake, Atsushi Takenouchi, Haruka Ono, Aiko Nakato, Junko Isa, Tomohiro Usui, Hirotsugu Nishido   +14 more
wiley   +1 more source

The Red Dawn of Geoengineering: First Step Toward an Effective Governance for Stratospheric Injections [PDF]

, 2016
A landmark report by the National Academy of Sciences (NAS) issued in 2015 is the latest in a series of scientific studies to assess the feasibility of geoengineering with stratospheric aerosols to offset anthropogenic global warming and to conclude that
Larson, Edward J.
core   +2 more sources

Chromite in main group pallasite meteorites: Accessory mineral tracing planetesimal differentiation

Meteoritics &Planetary Science, EarlyView.
Abstract Main group pallasite meteorites (PMG) are samples of an early, highly differentiated magmatic planetesimal dominated by olivine and metal‐sulfide‐phosphide assemblages with accessory chromite among other phases. This mineralogy reflects mantle‐ and core‐related reservoirs, but the relative contributions of each and the overall petrogenesis are
Seann J. McKibbin, Lutz Hecht, Matthew S. Huber, Christina Makarona, Stepan M. Chernonozhkin, Philippe Claeys, Steven Goderis   +6 more
wiley   +1 more source

A Tale of Two Shrimps—Speciation and Demography of Two Sympatric Shrimp Species From Hydrothermal Vents

Molecular Ecology, EarlyView.
ABSTRACT Hydrothermal vents can serve as natural laboratories to study speciation processes due to their fragmented distribution, often with geographic barriers between habitats. Two sympatric species of Rimicaris shrimps occur at vents on the Izu‐Bonin‐Mariana volcanic arc: Rimicaris loihi also occurs near Hawai’i and R.
Pierre Methou, Shannon B. Johnson, John Sherrin, Timothy M. Shank, Chong Chen, Verena Tunnicliffe   +5 more
wiley   +1 more source

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

Data Brief, 2022
Mastroianni F, Braschi E, Casalini M, Agostini S, Di Salvo S, Vougioukalakis G, Francalanci L.   +6 more
europepmc   +1 more source