نتایج جستجو برای: volcano

تعداد نتایج: 7435  

Journal: :journal of sciences, islamic republic of iran 2009
m. mortazavi

damavand is a large dormant stratovolcano in the alborz mountains of northern iran located in one of the most populous provinces, which could be adversely affected by tephra fall from damavand. the youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. the volcanic products are predominantly porphyritic trachyandesite. three major young pumice deposits, named here a...

2014
Guillermo Cortés Luz García Isaac Álvarez Carmen Benítez Ángel de la Torre Jesús Ibáñez

a r t i c l e i n f o Automatic recognition of volcano-seismic events is becoming one of the most demanded features in the early warning area at continuous monitoring facilities. While human-driven cataloguing is time-consuming and often an unreliable task, an appropriate machine framework allows expert technicians to focus only on result analysis and decision-making. This work presents an alte...

2008
K. Scharrer

This paper presents latest results from the combined use of SAR (Synthetic Aperture Radar) remote sensing and GIS providing detailed insights into recent volcanic activity under Vatnajökull ice cap (Iceland). Glaciers atop active volcanoes pose a constant potential danger to adjacent inhabited regions and infrastructure. Besides the usual volcanic hazards (lava flows, pyroclastic clouds, tephra...

2008
I. López

Magellan data show that the surface of Venus is dominated by volcanic landforms including large flow fields and a wide range of volcanic edifices that occur in different magmatic and tectonic environments. This study presents the results from a comprehensive survey of volcano– rift interaction in the BAT region and its surroundings. We carried out structural mapping of examples where interactio...

2017
Karsten Spaans Sigrún Hreinsdóttir Andrew Hooper Benedikt Gunnar Ófeigsson

Journal: :Science 2007
Mike Burton Patrick Allard Filippo Muré Alessandro La Spina

Strombolian-type eruptive activity, common at many volcanoes, consists of regular explosions driven by the bursting of gas slugs that rise faster than surrounding magma. Explosion quakes associated with this activity are usually localized at shallow depth; however, where and how slugs actually form remain poorly constrained. We used spectroscopic measurements performed during both quiescent deg...

2012
K. A. Kormas M. G. Pachiadaki

Introduction Conclusions References

2017
Grzegorz Neubauer Lucyna Pilacka Piotr Zieliński Jadwiga Gromadzka

Weather and predation constitute the two main factors affecting the breeding success of those Arctic waders whose productivity is highly variable over the years. We tested whether reproductive success is associated with the post-breeding condition of adults, in which in 'good' years (with warm weather, plentiful food and low predation pressure) the condition of breeders and their productivity i...

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