Sökning: "Earth system"
Visar resultat 21 - 25 av 858 avhandlingar innehållade orden Earth system.
21. Validation and time series analysis of global stratospheric data sets
Sammanfattning : The depletion of ozone from the stratosphere and the impact of global warming have been identified as phenomena caused as a result of anthropogenic activity. Scientists are thus trying to find quicker and more reliable ways to analyse these environmental problems. LÄS MER
22. Stewardship in an urban world : Civic engagement and human–nature relations in the Anthropocene
Sammanfattning : Never before have humans wielded a greater ability to alter and disrupt planetary processes. Our impact is becoming so noticeable that a new geological epoch has been proposed – the Anthropocene – in which Earth systems might no longer maintain the stable and predictable conditions of the past 12 millennia. LÄS MER
23. Mapping bathymetry : From measurement to applications
Sammanfattning : Surface elevation is likely the most fundamental property of our planet. In contrast to land topography, bathymetry, its underwater equivalent, remains uncertain in many parts of the World ocean. Bathymetry is relevant for a wide range of research topics and for a variety of societal needs. LÄS MER
24. The High-Pressure Study on the Fe - O System: Thermodynamics and Phase Transitions of Iron Ferrite (FeFe2O4)
Sammanfattning : Knowledge about the stability of phases and their relationships in the Fe-O system at high pressures and temperatures is essential in implications of the multifarious states of iron oxides for models of the evolution of the Earth. In this respect, the iron ferrite magnetite (FeFe2O4) plays a significant role since it participates in the control of geochemistry of ferric iron, and hence oxygen fugacity in the Earth`s deep interior. LÄS MER
25. Inverstigations of Crustal Structure Structure and Seismo-Tectonics in the Western Branch of the East African Rift System
Sammanfattning : The most seismically active part of the East African rift system (EARS) is the western branch. Understanding the crustal structure and its evolution is important in order to obtain accurate locations and mechanisms of earthquakes, hence to deduce the nature of the neotectonics. LÄS MER