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The Gümüldür Fire Opal: Mode of Occurrence and Mineralogical Aspects
earth siences silica polymorphs rocks
2011/3/22
Five types of silica polymorphs have been identified in dacitic volcanics from the Gümüldür region of western Anatolia, Turkey. Two of them are micro-quartz and disordered cristobalite (opal-C) that o...
The Co-planarity and Symmetry Principle of Earthquake Occurrence
Earthquake Co-planarity Symmetry
2013/3/6
Under the assumption that the earth movement tendency is a sphere, the author does research about the earthquakes occurrence between 2001 and 2010 which over 6 scales of magnitude on occurred time (UT...
The role of meteorological and climatic conditions in the occurrence of damaging hydro-geologic events in Southern Italy
meteorological and climatic conditions damaging hydro-geologic events Southern Italy
2009/12/16
Damaging Hydro-geologic Events (DHEs), defined as landslides and floods caused by heavy or prolonged rainfall, represent an important source of economic damages. We propose an approach to classify DHE...
Thermal anomalies and fluid geochemistry framework in occurrence of the 2000-2001 Nizza Monferrate seismic sequence (northern Italy):Episodic changes in the fault zone heat flow or chemical mixing phenomena?
Thermal anomalies fluid geochemistry framework Episodic changes fault zone heat flow
2009/12/11
The paper discusses the correlation between the heating of shallow groundwater over a 10 × 20 km wide area close to the town of Nizza Monferrato (Piemonte Region, Northern Italy) and the concomitant l...
The role of meteorological and climatic conditions in the occurrence of damaging hydro-geologic events in Southern Italy
meteorological and climatic conditions damaging hydro-geologic events Southern Italy
2009/12/8
Damaging Hydro-geologic Events (DHEs), defined as landslides and floods caused by heavy or prolonged rainfall, represent an important source of economic damages. We propose an approach to classify DHE...
Low-grade sedimentary rocks on Vanna,North Norway:a new occurrence of a Palaeoproterozoic (2.4-2.2 Ga) cover succession in northern Fennoscandia
Low-grade sedimentary rocks new occurrence Palaeoproterozoic (2.4-2.2 Ga) cover succession
2009/12/2
The Archaean to Palaeoproterozoic West Troms Basement Complex comprises various tonalitic gneisses, felsic and mafic intrusive rocks and intervening narrow NW-SE-trending belts with partly mylonitised...
The Hortavær Complex in north-central Norway is a well documented example of the formation of an alkaline magmatic suite due to the assimilation of carbonate and calc-silicate rocks (Vogt 1916; ...
Impacts of anthropogenic and environmental factors on the occurrence of shallow landslides in an alpine catchment (Urseren Valley, Switzerland)
anthropogenic and environmental factors shallow landslides an alpine catchment
2009/12/30
In this study, we explicitly consider the influence of dynamic human-induced changes on the occurrence of landslides in addition to natural factors. Our hypothesis was that if changes in land use and ...
Evaluation of the CPTEC/AGCM wind forecasts during the hurricane Catarina occurrence
CPTEC/AGCM wind forecasts hurricane Catarina occurrence
2010/1/27
In March 2004 occurred the first hurricane registered at South Atlantic Ocean. The system named Catarina begun as an extratropical cyclone and remained quasi-stationary some days over the South Atlant...
The roles of ENSO on the occurrence of abruptly recurving tropical cyclones over the Western North Pacific Ocean Basin
ENSO recurving tropical cyclones the Western North Pacific Ocean Basin
2010/1/25
The abruptly recurving tropical cyclones over the Western North Pacific Ocean Basin during El Niño and La Niña events are studied. Temporal and spatial variations of these anomalous trac...
On 3 to 6 year cycles in the time of geomagnetic storm sudden commencement occurrence and ENSO climate cycles
geomagnetic storm ENSO climate cycles
2010/1/25
The geographic longitude of the subsolar meridian (SML) evaluated at the time of geomagnetic Storm Sudden Commencement (SSC) occurrence shows an unexpected organized longitudinal progression with time...
Use of historical data to assess the occurrence of floods in small watersheds in the French Mediterranean area
historical data the occurrence of floods small watersheds the French Mediterranean area
2010/1/22
The results of an investigation on historical floods in four watersheds of the Aude region in France are presented herein. Using both, archive documents and field investigations, the discharges of the...