Gray value determination from sediment core of Lake Alchichica in Mexico

Publishing Network for Geoscientific and Environmental Data (PANGAEA) (Alfred Wegener Institute for Polar and Marine Research) 2026 Dataset Open access

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Authors: Safaierad, Reza, Israde-Alcántara, Isabel, Rantala, Marttiina V, Domínguez-Vázquez, Gabriela, Schefuß, Enno, Tylmann, Wojciech, Francus, Pierre, Mattielli, Nadine, Metcalfe, Sarah, Fagel, Nathalie
DOI: 10.1594/pangaea.982951
Cited by: 0

Abstract

The grey values were measured from a 57-cm-long sediment core retrieved from Lake Alchichica (19° 24' 38 N, 97° 24' 14 W, 2322 masl) at a water depth of ~ 60 m using a Uwitec® coring device equipped with a 9-cm coring tube. The core structure was revealed by a Siemens Somatom Definition +128 CT-scanner at the INRS Centre Eau Terre Environnement with a 0.31 mm resolution in the stratigraphic direction. Grey levels are expressed in Hounsfield units (HU): light (dark) grey levels represent dense (light) sediments. The analysis was performed at the INRS Centre Eau Terre Environnement in Canada.

Publication details

Journal / source
Publishing Network for Geoscientific and Environmental Data (PANGAEA) (Alfred Wegener Institute for Polar and Marine Research)
Publication date
1 January 2026
Language
EN
Document type
Dataset