Listing 1 - 2 of 2 |
Sort by
|
Choose an application
Time-resolved optical stimulation of luminescence has become established as an important method for measurement of optically stimulated luminescence. Its enduring appeal is easy to see with the number of materials studied growing from the initial focus on natural minerals such as quartz and feldspar to synthetic dosimeters such as α-Al2O3:C, BeO and YAlO3:Mn2+. The aim of time-resolved optical stimulation is to separate in time the stimulation and emission of luminescence. The luminescence is stimulated from a sample using a brief light pulse. The ensuing luminescence can be monitored either during stimulation in the presence of scattered stimulating light or after the light-pulse. The time-resolved luminescence spectrum measured in this way can be resolved into components each with a distinct lifetime. The lifetimes are linked to physical processes of luminescence and thus provide a means to study dynamics involving charge transfer between point-defects in materials.
Choose an application
Rivers are an excellent witness of the dynamics affecting Earth’s surface due to their sedimentary products and morphological expression, which may be considered as fluvial archives. Until now, the focus has been on evaluating the general impact of individual external factors. However, the importance of the specific environmental characteristics of these factors has become increasingly recognized, as highlighted in recent case studies. For example, the effects of regional climate, differentiated topography and vegetation, and frozen ground appear to play an essential role in the evolution of the fluvial system. Integration of such environmental conditions in the processes that were active within the complex fluvial system will open new perspectives in our progressive understanding of the evolution of landscape form, ecology, sediment fluxes, and hydrology of the system within the framework of the external drivers such as tectonics, general climate, and human activity. This is an appealing challenge that we wish to address in the present Special Issue under the aegis of the Fluvial Archives Group (FLAG).
n/a --- Tisa --- dikes --- OSL dating --- last glacial --- legacy sediments --- fluvial archives --- western Iberia --- fire --- river engineering --- uplift --- crustal properties --- craton --- fluvial evolution --- OSL-dating --- local conditions --- Pannonian Basin --- deforestation --- eastern Australia --- tectonic impact --- Holocene --- optically stimulated luminescence --- paleo-fluvial --- environmental change --- terrace development --- vegetation-induced sedimentary structures --- alluvial fan --- FLAG --- dams --- agriculture --- fluvial forcing --- domestication --- archaeology --- terrace --- sedimentary basins --- Anthropocene --- Late Pleistocene --- fluvial facies --- optical stimulated luminescence (OSL) dating --- OSL --- climate --- channel entrenchment --- grain-size analysis --- river terraces --- Tisza --- extrinsic controls
Listing 1 - 2 of 2 |
Sort by
|