نتایج جستجو برای: volcanic eruptions

تعداد نتایج: 18049  

2001
Alan Robock John S Perry Ted Munn

2006
R. U. Bryson R. A. Bryson A. Ruter

A calibrated radiocarbon database of late Quaternary volcanic eruptions R. U. Bryson, R. A. Bryson, and A. Ruter National Park Service, Mojave National Preserve, 2701 Barstow Road, Barstow, CA 92311, USA Center for Climatic Research, University of Wisconsin-Madison, 1225 W. Dayton St., Madison, WI 53706, USA Received: 24 May 2006 – Accepted: 17 July 2006 – Published: 25 July 2006 Correspondence...

2015
M. Fujiwara T. Hibino S. K. Mehta J. Anstey

Introduction Conclusions References

Journal: :international journal of environmental research 2011
o.i. shumilov e.a. kasatkina k. mielikainen m. timonen a.g. kanatjev

the paper deals with the analysis of the external factor (solar activity, volcanic eruptions) influence on tree growth at the kola peninsula, northwestern russia. pinus sylvestris l. (scots pine) tree-ring chronologies collected nearby the northern timberline (68.63n, 33.25e) include the oldest (1445-2005 ad) living pine tree found up to date in the kola peninsula. a total of 18 living trees p...

2004
Earle R. Williams Stephen R. McNutt

The fundamental role of ice particle collisions in the separation of electric charge and generation of lightning in thunderclouds is now reasonably well established (Latham, 1981; Williams, 1985; Saunders, 1995). Charge separation and lightning are also prevalent in volcanic eruptions. A recent literature survey by McNutt and Davis (2000), and its recent extension, has shown more than 150 incid...

2012
Fredric M. Ham Ishwarya Iyengar Bereket M. Hambebo Milton Garces John Deaton Anna Perttu Brian Williams

Plinian volcanic eruptions can inject a substantial amount of volcanic ash and gas into the stratosphere, which can present a severe hazard to commercial air traffic. A hazardous volcanic ash eruption was reported on April 14, 2010, and London’s aviation authority issued an alert that an ash plume was moving from an eruption in Iceland towards northwestern Europe. This eruption resulted in the ...

2013
Jérémie Vasseur Fabian B Wadsworth Yan Lavallée Kai-Uwe Hess Donald B Dingwell

[1] Sintering and densification are ubiquitous processes influencing the emplacement of both effusive and explosive products of volcanic eruptions. Here we sinter ash-size fragments of a synthetic National Institute of Standards and Technology viscosity standard glass at temperatures at which the resultant melt has a viscosity of ∼108-109 Pa.s at 1bar to assess sintering dynamics under near-sur...

2012
A. Ansmann

The polarization lidar photometer networking (POLIPHON) method introduced to separate coarse-mode and fine-mode particle properties of Eyjafjallajökull volcanic aerosols in 2010 is extended to cover Saharan dust events as well. Furthermore, new volcanic dust observations performed after the Grimsvötn volcanic eruptions in 2011 are presented. The retrieval of particle mass concentrations require...

2011
V. Pinel

Volcanic edifice construction at the Earth's surface significantly 3 modifies the stress field within the underlying crust with two main implica

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