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Age determination of paleotsunami sediments around Lombok Island, Indonesia, and identification of their possible tsunamigenic earthquakes

“…210 Pb binds with air particles, sinks to the earth surface and is deposited in the sediments. Conversion of 210 Pb to age and sedimentation is using simple models, namely Constant Flux and Constant Sedimentation (CF/CS), Constant Initial Concentration (CIC) or Constant Rate of Supply (CRS), depending on 210 Pb profile contained in the sediment (Sanches-Cabeza et al 1999;Gelen et al 2003;Madsen et al 2005;Arman 2006;Boer et al 2006;Arman et al 2007). The 210 Pb CRS model with MARs factor was applied in this research to determine accurate ages of abruptly deposited sediments, such as tsunami deposits (Boer et al 2006).…”

“…210 Pb analysis is preferred in this study because it is effective in determining the age of the sediments with a range of 30-150 years (Madsen et al 2005;Boer et al 2006). In addition to its age range, 210 Pb can detect abrupt sedimentation (Gelen et al 2003) and the surface mixed layer (Boer et al 2006) such as tsunami deposits. Natural 210 Pb is also more appropriate to be used in the study area as it is considered to be far away from the nuclear activities, compared to the artificial 137 Cs method where 137 Cs origins from the nuclear explosion.…”

“…Natural 210 Pb is also more appropriate to be used in the study area as it is considered to be far away from the nuclear activities, compared to the artificial 137 Cs method where 137 Cs origins from the nuclear explosion. Moreover, the 137 Cs method is not sensitive for abrupt sedimentation processes (Gelen et al 2003) such as tsunami deposits.…”

Sedimentation rates in the Lake Qattinah using 210Pb and 137Cs as geochronometer

“…Lake sediments are known to provide reliable record since the majority of pollutant elements are retained in sediments (Mihelčić et al, 1996;Gelen et al, 2003;Mast et al, 2010).…”

From Sources to Solution

“…210 Pb has been widely used as marine tracers of particles/ water transport and particulate scavenging (Benoit and Rozan 2001). The usage of tracer such as 210 Pb allows tracing the history and sources of pollution on studied area (Gelen et al 2003). The area around Sepang Besar River has been fully utilized for agriculture, animal farming, residential, aquaculture, ecotourism and power plant activities.…”