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Den andra episoden var för mellan ca 14 500 och 13 000 år sedan, och den yngsta dateringen motsvarar början av kallfasen Yngre Dryas.

The following events can be dated by luminescence technique i) The most recent sun bleaching (application in sediment dating) ii) The most recent thermal event (application in archaeology, baking by lava flows, fusion crust of meteorites) iii) Crystallization event (application in travertine's in caves) Sediment sample should be collected in steel pipe to avoid any exposure to sun light. In the lab (under sub-dued red light condition), chemical treatment, sieving and mineral extraction will be carried out.The oldest event recorded during this study was after deglaciation at ca.15 200 a. 14 500 to 13 000 a and the last date obtained in this event is at the beginning of the Younger Dryas. 1900 - 1700 a at the time of the Roman warm period. 400 - 300 a and the fifth or latest episode was at ca. The first episode was deposited right after deglaciation and the remaining four episodes were deposited probably due to climatic impact such as strong storminess or by human activities.(Less)Sammanfattning: Vind är en viktig process för sedimenttransport och för landskapförändring, och eoliska sediment (flygsand) kan användas för att rekonstruera forntida klimat.Den fjärde episoden var ca 400 - 300 år sedan, och den femte och sista för ca 200 - 160 år sedan, vid den s.k. Den första episoden skedde direkt efter isavsmältningen och de återstående fyra orsakades troligen av mänsklig aktivitet eller klimatpåverkan som OSL dating can be used to determine the time since naturally occurring minerals, such as quartz and feldspar, were last exposed to light within the last few hundreds of thousands of years.

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Depending on the type of stimulation source, the phenomenon is termed thermally stimulated luminescence (TL) or optically stimulated luminescence (OSL).

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