 |
| Titel |
Saharan dust from a marine perspective: sediment-trap time series off Mauritania |
| VerfasserIn |
Carmen Friese, Jan-Berend Stuut, Michelle van der Does, Gerhard Fischer |
| Konferenz |
EGU General Assembly 2014
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250098210
|
| Publikation (Nr.) |
 EGU/EGU2014-13864.pdf |
|
|
|
|
|
| Zusammenfassung |
| The particle size of mineral dust is often used as a tool to reconstruct paleoenvironmental conditions in the source of the dust. Both in on-land (loess), lacustrine, and in marine archives, the size of dust deposits is considered a proxy for paleo-wind intensity. However, next to wind strength, the particle size of aeolian deposits is also influenced by various other parameters such as source-to-sink distance, altitude at which the particles have been transported, and various other environmental conditions in the sources of the dust. To verify if we can quantify a relationship between the size of mineral dust particles and prevailing environmental conditions, we study "modern" dust. Here we present grain-size distributions of Saharan dust that was collected in a marine sediment trap, which is situated off Cape Blanc, ~400 km offshore the Mauritanian coast. In this trap, dust is collected that is sinking through the water column to the ocean floor. The temporal resolution of the trap is 1-2 weeks. The time series was started in the late 1980's and is still being continued. |
|
|
|
|
|
|