Projected geopark “Volcanic Carpathians

Economic Effects of Geotourism in Geopark TERRA.vita, Northern Germany

Guest editors’ note: In order to gain the necessary political and public support, geoparks have to demonstrate how they contribute to the socioeconomic development of their particular region. In addition to the other important tasks of nature protection, conservation of geologic heritage, and promotion of tourism, education, and research, geoparks have to evaluate the regional economic effects ...

An Integrated WebGIS-Based Mangement Platform of Geopark

After a careful examination and an extensive investigation of the Geopark development, all data of geological heritage, relevant research, tourism information and science education are integrated by the technologies of ArcGIS, MapServer and database software, based on the detailed analysis and design of system architecture, database design, map file handling, user interface design and system de...

PROJECTED DYNAMICAL SYSTEMS AND OPTIMIZATION PROBLEMS

We establish a relationship between general constrained pseudoconvex optimization problems and globally projected dynamical systems. A corresponding novel neural network model, which is globally convergent and stable in the sense of Lyapunov, is proposed. Both theoretical and numerical approaches are considered. Numerical simulations for three constrained nonlinear optimization problems a...

Volcanic Eruptions

Water in volcanic glass: From volcanic degassing to secondary hydration

Volcanic glass is deposited with trace amounts (0.1–0.6 wt.%) of undegassed magmatic water dissolved in the glass. After deposition, meteoric water penetrates into the glass structure mostly as molecular H2O. Due to the lower dD (‰) values of non-tropical meteoric waters and the 30‰ offset between volcanic glass and environmental water during hydration, secondary water imparts lighter hydrogen ...