2026-10-15T11:44:58Z https://data.mendeley.com/oai

oai:data.mendeley.com/dbrvg3kypc.1 2026-01-19T20:07:09Z

GANDHI, DR. DRASTI Optically Stimulated Luminescence (OSL) Dataset from Tsunami Sand Sheet at PanjorPir, Gujarat, India Mendeley Data This dataset contains accepted equivalent dose (De) values and associated quality control parameters derived from Single-Aliquot Regenerative dose (SAR) measurements on quartz grains extracted from tsunami deposits at the ISR-Pp site, Gujarat, western India. These values were used for optically stimulated luminescence (OSL) age modeling to constrain the chronology of Holocene high-energy coastal events. Sample Context: - Site: ISR-Pp (PanjorPir, Kachchh Gujarat coast) - Material: Quartz grains (90–125 µm) extracted from coastal tsunami deposits - Protocol: SAR protocol performed using a Risø TL/OSL DA-20 reader with a 90Sr/90Y beta source Columns in the dataset: - `ED`: Equivalent dose (Gy) measured for each aliquot - `Err ED`: 1σ uncertainty associated with each De value (Gy) - `Er % (20)`: Relative error as a percentage of De (to guide acceptance threshold) - `EDi/si²`: Value of (De / σ²), for computing weighted averages - `1/si²`: Inverse squared De uncertainty (used in CAM and weighted mean calculations) Processing & Acceptance: Aliquots included in this table met the following SAR acceptance criteria: - Recycling Ratio between 0.9 and 1.1 - De Error ≤ 15% - Test signal change ≤ 10% (if assessed) Final values were used to calculate an age with different age models, with an overdispersion of ~36% and positive skewness (0.5), indicating a partially bleached De distribution. Software: Data analysis was performed using Microsoft Excel and the Luminescence package in R. Tsunami Deposit Tsunami Hazard Assessment Coastal Hazard Optically-Stimulated Luminescence Dating Dataset doi:10.17632/dbrvg3kypc.1 oai:data.mendeley.com/dbrvg3kypc.1 Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 https://data.mendeley.com/datasets/dbrvg3kypc 2026-01-19T20:07:09Z