Optical dating techniques
Ainsi, l’article souligne l’importance de la méthode pour les recherches en géomorphologie, notamment dans le cadre du développement de la géomorphologie quantitative.
The observed vertical displacement per event of ~0.50 m corresponds to an Mw 6.5 ± 0.1 earthquake.
Stimulating samples using infrared light causes luminescence, the intensity of which varies depending on the amount of radiation absorbed.
Exposure to sunlight resets the luminescent signature and so the time period since the sediment was buried can be calculated.
As sediment is transported by wind, water, or ice, it is exposed to sunlight and zeroed of any previous luminescence signal.
Once this sediment is deposited and subsequently buried, it is removed from light and is exposed to low levels of natural radiation in the surrounding sediment.