DISTAL VOLCANIC ASH DEPOSITION AS A CAUSE FOR MASS KILLS OF MARINE INVERTEBRATES DURING THE MIOCENE IN NORTHERN PATAGONIA, ARGENTINA

Palaios ◽  
2016 ◽  
Vol 31 (12) ◽  
pp. 577-591 ◽  
Author(s):  
EVIN P. MAGUIRE ◽  
RODNEY M. FELDMANN ◽  
SILVIO CASADÍO ◽  
CARRIE E. SCHWEITZER
Keyword(s):  
Volcanic Ash ◽  
Marine Invertebrates ◽  
Ash Deposition ◽  
Northern Patagonia

scholarly journals Impact of volcanic ash deposition on foliar productivity and insect herbivory in northern Patagonia deciduous forests

2014 ◽  
Vol 24 (1) ◽  
pp. 051-063
Author(s):  
Enrique J. Chaneton ◽  
Noemí Mazía ◽  
Lucas A. Garibaldi ◽  
Jaquelina Chaij ◽  
Thomas Kitzberger
Keyword(s):  
Volcanic Ash ◽  
Insect Herbivory ◽  
Deciduous Forests ◽  
Ash Deposition ◽  
Northern Patagonia

scholarly journals Impact of volcanic ash deposition on foliar productivity and insect herbivory in northern Patagonia deciduous forests

2014 ◽  
Vol 24 (1) ◽  
pp. 051-063 ◽  
Author(s):  
Enrique J. Chaneton ◽  
Noemí Mazía ◽  
Lucas A. Garibaldi ◽  
Jaquelina Chaij ◽  
Thomas Kitzberger
Keyword(s):  
Volcanic Ash ◽  
Insect Herbivory ◽  
Deciduous Forests ◽  
Ash Deposition ◽  
Northern Patagonia

scholarly journals The role of airborne volcanic ash for the surface ocean biogeochemical iron-cycle: a review

2009 ◽  
Vol 6 (4) ◽  
pp. 6441-6489 ◽  
Author(s):  
S. Duggen ◽  
N. Olgun ◽  
P. Croot ◽  
L. Hoffmann ◽  
H. Dietze ◽  
...  
Keyword(s):  
Large Scale ◽  
Volcanic Ash ◽  
Volcanic Eruptions ◽  
Research Field ◽  
Ash Deposition ◽  
Future Directions ◽  
Iron Cycle ◽  
Surface Ocean ◽  
Wide Range

Abstract. 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. Recent studies, however, suggest that offshore deposition of airborne ash from volcanic eruptions is a way to inject significant amounts of bio-available iron into the surface ocean. Volcanic ash may be transported up to several tens of kilometres high into the atmosphere during large-scale eruptions and fine ash may encircle the globe for years, thereby reaching even the remotest and most iron-starved oceanic areas. Scientific ocean drilling demonstrates that volcanic ash layers and dispersed ash particles are frequently found in marine sediments and that therefore volcanic ash deposition and iron-injection into the oceans took place throughout much of the Earth's history. The data from geochemical and biological experiments, natural evidence and satellite techniques now available suggest that volcanic ash is a so far underestimated source for iron in the surface ocean, possibly of similar importance as aeolian dust. Here we summarise the development of and the knowledge in this fairly young research field. The paper covers a wide range of chemical and biological issues and we make recommendations for future directions in these areas. The review paper may thus be helpful to improve our understanding of the role of volcanic ash for the marine biogeochemical iron-cycle, marine primary productivity and the ocean-atmosphere exchange of CO2 and other gases relevant for climate throughout the Earth's history.

Thermal Stress in Volcanic-Ash-Deposited Thermal Barrier Coatings Monitored by Long-Range Laser System

2016 ◽  
Vol 713 ◽  
pp. 293-296
Author(s):  
Masayuki Arai ◽  
Daichi Yamaura
Keyword(s):  
Thermal Stress ◽  
Power Plants ◽  
Volcanic Ash ◽  
Thermal Power ◽  
Laser System ◽  
Tokyo Bay ◽  
Thermal Barrier ◽  
Ash Deposition ◽  
Barrier Coating ◽  
Laser Monitoring

All thermal power plants including gas turbine (GT) of Tokyo electric company are located along Tokyo bay. If Mt. Fuji is exploded, volcanic ash is fallen down in Kanto area. If volcanic ash is inhaled into GTs, the ash would be firstly impacted and deposited onto thermal barrier coating (TBC) of the blades. Such deposition of the volcanic ash causes the delamination of the ceramic coating. In this study, TBC delamination mechanisms due to the volcanic ash deposition is discussed based upon thermal stress evaluated by a laser monitoring measurement system.

Native pine species performance in response to age at planting and mulching in a site affected by volcanic ash deposition

New Forests ◽  
2008 ◽  
Vol 36 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Arnulfo Blanco-García ◽  
Cuauhtémoc Sáenz-Romero ◽  
Pedro Alvarado-Sosa ◽  
Roberto Lindig-Cisneros
Keyword(s):  
Volcanic Ash ◽  
Ash Deposition ◽  
A Site ◽  
Species Performance ◽  
Pine Species

scholarly journals Volcanic Ash Deposition and Long-Term Vegetation Change on Subantarctic Marion Island

2007 ◽  
Vol 39 (3) ◽  
pp. 500-511 ◽  
Author(s):  
Dan Yeloff ◽  
Dmitri Mauquoy ◽  
Keith Barber ◽  
Susannah Way ◽  
Bas van Geel ◽  
...  
Keyword(s):  
Vegetation Change ◽  
Volcanic Ash ◽  
Ash Deposition ◽  
Marion Island
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