Results 111 to 120 of about 18,565 (272)
On the resistance of rare earth oxide-doped YSZ to high temperature volcanic ash attack
, 2016 Thermal barrier coatings (TBCs), such as 7-8 wt.% yttria stabilized zirconia (YSZ), are widely used to reduce the temperature of coated materials. However, when a turbine operates in a harsh environment, for example a volcanic ash attack, sand and ash ...
Zhou, YC (reprint author), Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Key Film Mat & Applicat Equipment Hunan P, Xiangtan 411105, Hunan, Peoples R China. +8 more
core +1 more source
, 2012 Andisols are soils that typically form in loose volcanic ejecta (tephra) such as volcanic ash, cinders, or pumice. They are characterized by andic properties that include physical, chemical, and mineralogical properties that are fundamentally different ...
Arnalds, Olafur +3 more
core
Tephra studies in New Zealand: an historical review.
, 1990 The development of tephra studies in New Zealand may be divided into four main periods: Period 1, late 19th century to late 1920s; Period 2, late 1920s to early 1950s; Period 3, early 1950s to 1973; Period 4, 1973 to late 1980s.
Lowe, David J., David J. Lowe
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Volcanic ash in the atmosphere
, 2018 This thesis presents new work on the characterisation of volcanic ash in the atmosphere. The eruption of Eyjafjallajökull in 2010 brought the issue of ash in the atmosphere into sharp focus. Radiative transfer models used in remote sensing and hazard assessment of volcanic ash require knowledge of ash optical parameters, which are governed by the ...
openaire +2 more sources
Pyroclastic deposits and volcanic history of Mayor Island
, 1981 The emergent summit of Mayor Island, Bay of Plenty, New Zealand, is a peralkaline rhyolite volcano constructed by: a sequence of lava flows, the Tutaretare Rhyolite Formation(new); and pyroclastic deposits, the Oira Pyroclastite Formation (new).
Nelson, Campbell S. +2 more
core +1 more source
, 1993 Tour themes and itinerary The tour centres on the occurrence and genesis of clay minerals, especially allophane, halloysite, and ferrihydrite, associated with both Quaternary rhyolitic airfall tephra (volcanic ash) deposits and volcanogenic alluvium ...
Lowe, David J., Percival, H.J.
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The role of airborne volcanic ash for the surface ocean biogeochemical iron-cycle: a review [PDF]
Biogeosciences, 2010 Iron is a key micronutrient for phytoplankton growth in the surface ocean. Yet the significance of volcanism for the marine biogeochemical iron-cycle is poorly constrained.
S. Duggen +6 more
doaj
, 2013 textThis research was able to identify a wide range of elements present in fresh volcanic ash from a 2010 eruption in Indonesia using varied instrumental neutron activation analysis techniques.
Canion, Bonnie Elise
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Trace element mobility during interaction between rain and volcanic ash on Mt. Etna
, 2012 Volcanic emissions represent one of the most relevant natural sources of trace elements to the troposphere, both during and between eruptions. Due to their potential toxicity they may have important environmental impacts from the local to the global ...
PARELLO, Francesco +2 more
core
(Appendix) Volcanic ash composition at DSDP Site 87-584
, 1986 (Appendix) Volcanic ash composition at DSDP Site 87 ...
Fujioka, Kantaro +5 more
core +1 more source