حساب أعمار الترسبات النهرية لشط العرب في منطقة السيبة بطريقة 210 Pb و باستخدام النموذجين الرياضيين CS : CF و CIC

الملخص EN

This paper describes the use of 210Pb radioactivity measurements to determine the sedimentation rate and calculating sediments age for Shattel- Arab in Seba area.

The sample has been taken from the area in question by using Core Sampler with the following criteria (15cm) diameter and (100cm) long.

The Sample has been collected from (10cm) deep.

The Sample length was (36cm).

After bringing the core to the lap, it has been cut in to layers.

The thickness of each layer is (4cm).

Then, these layers has been weighed and put in an oven separately with temperature 105 C0 for 2 weeks.

After wards, these layers has been grinded and passed through a sieve with (2mm) mesh.

Then 210Pb concentration of each layers has been measured in laps of Lebanon Atomic Energy Organization.

The sediments age has been calculated by using two models; the first Constant Flux Constant Sedimentation rate-model CF:CS and the second Constant Initial Concentration CIC.

The sedimentation rate has been determine by CF:CS model equal to 0.4 cm / year.