搜索结果: 1-15 共查到“知识库 volcanoes”相关记录27条 . 查询时间(0.044 秒)
A repeatable seismic source for tomography at volcanoes
Mt. Merapi tomography active seismics
2015/10/8
One major problem associated with the interpretation of seismic signals on active volcanoes is the lack of knowledge about the internal structure of the volcano. Assuming a 1D or a homogeneous instead...
Novel laser-based techniques for monitoring of volcanoes
diode laser absorption spectroscopy optical fiber
2015/9/10
An overview of novel laser techniques suitable for volcanic monitoring, based on different kinds of infrared laser
sources, is presented. Their main advantages and drawbacks are discussed focusing on...
A model of sulphur solubility for hydrous mafic melts: application to the determination of magmatic fluid compositions of Italian volcanoes
sulphur hydrous basalts volcanic gas
2015/9/10
We present an empirical model of sulphur solubility that allows us to calculate f S2 if P, T, fO2 and the melt composition,
including H2O and S, are known. The model is calibrated against three main ...
Mud volcanoes and microseepage: the forgotten geophysical components of atmospheric methane budget
methane lithosphere degassing mudvolcanoes greenhouse gas geodynamics
2015/9/10
Mud volcanoes and microseepage are two important natural sources of atmospheric methane, controlled by neotectonics
and seismicity. Petroleum and gas reservoirs are the deep sources, and faults and f...
Mud volcanoes and methane seeps in Romania: main features and gas flux
methane mud volcanoes Romania
2015/9/2
Romania is one of the European countries with the most vigorous natural seepage of methane, uprising from
pressurised natural gas and petroleum reservoirs through deep faults. The largest seepage zon...
Magnetic signature of submarine volcanoes in the Phlegrean Fields-Ischia Ridge (North-Western side of the Bay of Naples, Southern Italy)
Aeromagnetic survey Submarine volcanoes Phlegrean Fields-Ischia Ridge Procida offshore
2015/9/1
This paper presents a study of the Phlegrean Fields-Ischia submarine ridge by the analysis and interpretation of high-resolution aeromagnetic data recently acquired in the Western Procida offshore. Th...
Gas discharges from four remote volcanoes in northern Chile (Putana, Olca, Irruputuncu and Alitar): a geochemical survey
Fluid geochemistry Subduction zone Volcanic risk Geochemical data Volcano monitoring
2015/8/27
We analyzed gas samples collected from fumaroles and bubbling pools at Irruputuncu, Putana, Olca and Alitar volcanoes located in the central Andes volcanic zone (northern Chile). The Irruputuncu and P...
Monitoring active volcanoes: The geochemical approach
Active volcanoes geochemistry volcanic activity lava dissolving volatiles
2015/8/27
The geochemical surveillance of an active volcano aims to recognize possible signals that are related to changes in volcanic activity. Indeed, as a consequence of the magma rising inside the volcanic ...
Eruption patterns of parasitic volcanoes
Parasitic vents Parasitic eruptions Shear fracture model Twin parasitic vents Various patterns of parasitic eruptions
2015/8/14
Eruption patterns of parasitic volcanoes are discussed in order to study their correlation to the activities of their parental polygenetic volcanoes. The distribution density of parasitic vents on pol...
Three quarters of Earth's volcanic activity occurs beneath the sea, predominantly along the extensive mid-ocean ridge system that winds its way through the major ocean basins. The style of eruptive ac...
The Geological History of Deep-Sea Volcanoes: Biosphere,Hydrosphere,and Lithosphere Interactions
Deep-Sea Volcanoes Biosphere Hydrosphere Lithosphere
2015/7/7
The geological evolution of seamounts has distinct influence on their interactions with the ocean, their hydrology, geochemical fluxes, biology, resources, and geohazards. There are six geological evo...
INTERFEROMETRIC SYNTHETIC APERTURE RADAR STUDIES OF ALASKA VOLCANOES
Ground interference aperture radar imaging measurement spatial resolution new trident space distribution
2015/5/13
Interferometric synthetic aperture radar (InSAR) imaging is a recently developed geodetic technique capable of
measuring ground-surface deformation with centimeter to subcentimeter vertical precisio...
A re-evaluation of the Italian historical geomagnetic catalogue: implications for paleomagnetic dating at active Italian volcanoes
the Italian historical geomagnetic catalogue paleomagnetic
2014/12/31
Paleomagnetism is proving to represent one of the
most powerful dating tools of volcanics emplaced in Italy
during the last few centuries/millennia. This method requires
that valuable proxies of th...
Active volcanoes guided Tsunamigenic earthquakes from Andaman – Indonesia regions – A tectonic model
Tsunamigenic earthquakes Northern Sumatra tectonic model
2014/11/26
The Indian Ocean Tsunami of Northern Sumatra Great Earthquake disastrous event (Mw 9.3)
on 26th December 2004, had initiated release of trains of aftershocks in different directions.
The above eve...
Annex 1 to:Passive Degassing at Nyiragongo (D.R. Congo) and Etna (Italy) Volcanoes
Passive Degassing Nyiragongo (D.R. Congo) Etna (Italy) Volcanoes
2015/8/18
The technique for the assessment of the metal output from volcanoes was based on direct (in- plume) collection of the plume on filter substrates. Gas and aerosols in the volcanic plume have been sampl...