نتایج جستجو برای: volcanic activity

تعداد نتایج: 1147000  

2017
Evangelos Bakalis Theo J. Mertzimekis Paraskevi Nomikou Francesco Zerbetto

Submarine volcanoes, such as Kolumbo (Santorini, Greece) are natural laboratories for fostering multidisciplinary studies. Their investigation requires the most innovative marine technology together with advanced data analysis. Conductivity and temperature of seawater were recorded directly above Kolumbo's hydrothermal vent system. The respective time series have been analyzed in terms of non-e...

Journal: :The Science of the total environment 2006
André Amaral Victor Rodrigues Jorge Oliveira Carlos Pinto Vitor Carneiro Rui Sanbento Regina Cunha Armindo Rodrigues

Whether volcanic environments pose a risk in cancer incidence is unknown. We investigated this question in two populations, one from an area with active manifestations of volcanism (Furnas) and another from an area without volcanic activity since 3 million years ago (Santa Maria), both in Azores. Incidence data on cancer among the populations of Furnas and Santa Maria during 1991-2001 were obta...

Journal: :American Journal of Public Health 1986

2000
Moushegh Badalyan

Sixty heat flow values ranging from 38 to 157 mW/m have been estimated for Armenia from geothermal gradient determinations in 90 locations and a limited number of thermal conductivity determinations. The highest values of heat flow (90-157 mW/m) occur in the central part of the country, which is characterized by vigorous Quaternary volcanic activity, manifestations of thermal springs, intensive...

2003
Henrik Hargitai Dávid Karátson

INTRODUCTION Recent volcanic activity of Io generally does not produce conical mountains. Instead, their lava run out in thin, long flows. Volcanic centers are typically large, deep calderas cut into the interpatera plains. Bright lava flows on Io can mostly be associated with sulfur lavas, with no visible escarpments that would indicate higher viscosity material. From temperature measurements ...

Journal: :New Zealand Journal of Geology and Geophysics 1970

2012
Timothy A. Goudge John F. Mustard James W. Head Caleb I. Fassett

[1] Abundant evidence exists for valley network-related fluvial activity near the Noachian-Hesperian transition on Mars, and areally significant quantities of volcanic ridged plains were emplaced during this period as well. Thus, it is worthwhile to explore the hypothesis that lava-water interaction occurred on the surface of Mars at this time. We analyzed the morphology, physical properties, c...

2005
A. CARACAUSI M. DITTA F. ITALIANO M. LONGO P. M. NUCCIO

The possibility of understanding natural processes leading to explosive events in volcanic systems provides advantages for a better management of possible volcanic crises. On account of the possibility of the occurrence of other phenomena, such as tsunamis, the explosions driven by submarine volcanic systems are of particular interest, although little investigated. The recent sudden increase in...

Journal: :Eos, Transactions American Geophysical Union 2013

1999
R. C. PRICE R. B. STEWART J. D. WOODHEAD E. M. SMITH

Egmont Volcano (Mt Taranaki) is located 140 km west of the INTRODUCTION Taupo Volcanic Zone (TVZ), the principal locus of volcanic activity Egmont Volcano is a 2518 m high stratovolcano (Mt in the North Island of New Zealand, and is one of four closely Taranaki) resting on an extensive ring plain of volcanic associated Quaternary andesitic volcanoes in Taranaki province. debris in Taranaki prov...

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