We have developed a new method for measuring the isotopic composition (δ18O and δD) of different types of bonded water (e.g., molecular water, hydroxyl) contained in hydrated minerals by coupling a thermal gravimeter (TG) and a cavity ringdown laser spectrometer (CRDS). The method involves precisely step-heating a mineral sample, allowing the separation of the different types of waters that are...

This paper introduces the three-dimensional Hamburg Model of the Neutral and Ionized Atmosphere (HAMMONIA) that treats atmospheric dynamics, radiation and chemistry interactively for the height range from the Earth’s surface to the thermosphere (approximately 250 km). It is based on the latest version of the ECHAM atmospheric general circulation model of the Max Planck Institute for Meteorology...

In this paper, we develop a new axisymmetric analytic model of surface uplift upon sills and laccoliths, based on the formulation of a thin bending plate lying on an elastic foundation. In contrast to most former models also based on thin bending plate formulation, our model accounts for (i) axi-symmetrical uplift, (ii) both upon and outside the intrusion. The model accounts for shallow intrusi...

The Global Geodynamics Project (GGP) is an international network of superconducting gravimeters (SG) first established in 1997 and further extended in 2003. It was decided during the last IUGG assembly in 2007 to move to a permanent network hosted by IAG and become part of GGOS. Several new locations are being planned to extend the network to about 30 stations in 2008/2009. One of the present t...

*Correspondence: Adelina Geyer, Geophysical and Geochemical Modelling of Geohazard Processes and Subsurface Resources, Group of Volcanology, SIMGEO (UB-CSIC), Institute of Earth Sciences Jaume Almera, ICTJA-CSIC, Lluis Sole i Sabaris s/n, Barcelona 08028, Spain e-mail: [email protected] The term collapse caldera refers to those volcanic depressions resulting from the sinking of the chamber r...

Interferometric synthetic aperture radar (InSAR) techniques are used to calculate the volume of eruption at Okmok volcano, Alaska by constructing precise digital elevation models (DEMs) that represent volcano topography before and after the eruption. The pre-eruption DEM is generated using TOPSAR data where a three-dimensional multiaffined transformation is used to account for the misalignments...

Forecasting is a central goal of volcanology. Intensive monitoring of recent eruptions has generated integrated timeseries of data, which have resulted in several successful examples of warnings being issued on impending eruptions. Ability to forecast is being advanced by new technology, such as broad-band seismology, satellite observations of ground deformation and improved field spectrometers...

Abstract. In recent years, video games, as a geoscience communication tool, have gained momentum. Popular commercial games see millions of people around the world immersed in wondrous landscapes, many filled with real geological features including volcanoes, mineral deposits, and dinosaurs. Even though these can be overlooked by players simple game tropes, if utilized educational environments o...

Mineral inclusions are trapped in a variety of geological environments and physical conditions. If brought to conditions different than their entrapment, mineral will generally experience stress hosts due differences thermo-elastic properties the associated deformation. These develop both prograde retrograde metamorphic The currently available analytical solutions consider isotropic materials e...