ลักษณะเฉพาะตะกอนสึนามิ พ.ศ. 2547 และการสำรวจหลักฐานเหตุการณ์สึนามิและพายุโบราณจังหวัดกระบี่
The study of the characteristics of 2004 Tsunami deposits and investigate evidence of paleotsunami and storm surge aims to collect and record information from Changwat Krabi. The investigation utilized the inundation map and found no evidence of paleotsunami. However, 2004 tsunami sands were found a...
محفوظ في:
| المؤلف الرئيسي: | |
|---|---|
| مؤلفون آخرون: | |
| التنسيق: | Senior Project |
| اللغة: | Thai |
| منشور في: |
จุฬาลงกรณ์มหาวิทยาลัย
2014
|
| الموضوعات: | |
| الوصول للمادة أونلاين: | https://digiverse.chula.ac.th/Info/item/dc:9838 |
| الوسوم: |
إضافة وسم
لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!
|
| المؤسسة: | Chulalongkorn University |
| اللغة: | Thai |
| الملخص: | The study of the characteristics of 2004 Tsunami deposits and investigate evidence of paleotsunami and storm surge aims to collect and record information from Changwat Krabi. The investigation utilized the inundation map and found no evidence of paleotsunami. However, 2004 tsunami sands were found at Koh Lanta Noi and Baan Hat Yao, samples of tsunami sand, beach sands and pre-2004 tsunami sands were collected for analysis. Quantitative analysis of particle size was carried out using Particle Size Analyzer. Quantitative analysis of organic matters and carbonate particles was done using loss on ignition (LOI) method, while qualitative analysis of mineral composition was completed using binocular microscope. 2004 tsunami deposit at Koh Lanta Noi is 2 centimeters in thickness with mean grain size (Phi, φ) of 2.77, mainly fine sand with unimodal distribution, moderately well sorted, organic content (LOI550) of 1.98-2.41%, carbonate content (LOI950) of 0.55-0.65 %. 2004 tsunami deposit at Baan Hat Yao is 20 centimeters in thickness with mean grain size (Phi, φ) of 3.2, mainly very fine sand with unimodal distribution, moderately well sorted, organic content (LOI550) of 1.41-2.97% and carbonate content (LOI950) of 0.34-3.53%. Quartz was the main mineral component of tsunami deposit. Tsunami deposits are moderately well sorted, subrounded-rounded and high sphericity. Coral boulders found in headland and the beach are documented to identify mode of transportation, whether it is a tsunami or storm by using Lorang (2011) equation. The result is that we cannot identify which event transported them, because these coral boulders are too small and their elevation was too close to mean sea level so they could have been transported by normal sea waves. Keywords: Tsunami deposit, Paleotsunami deposit, Storm surge, Coral boulder, Characteristic of tsunami sediments |
|---|