Hydrochemical regime of the Lena river in august 2018

Abstract

The new hydrochemical data collected during August 2018 cruise from Yakutsk to Kyusyur, in the middle and lower reaches of the Lena River, are presented. Field and laboratory data were collated into a database containing 80+ parameters, notably stable water isotopes, suspended sediment concentration and dissolved organic carbon. Presented results allow the quantitative assessment of fluxes of dissolved and suspended material toward the Lena River delta, and the deduction of the regularities of transformation of these fluxes.

A database of water chemistry in eastern Siberian rivers

“… Type Source n River basin (region) Period 1 Database ArcticGRO 20 151 Lena/Kolyma 2003–2006 2009–2019 2 Database GLORICH 21 8 Lena/Yana/Indigirka 1991 1995–1997 3 Literature Georgiadi, et al . 22 2 Lena 2010 2018 4 Literature Huh, et al . 24 63 Lena/small rivers from eastern Siberia 1991–1997 5 Literature Kuzmin, et al .…”

“…The numbers correspond to “No.” in Table 1 : 1 - ArcticGRO 20 ; 2 - GLORICH 21 ; 3 - Georgiadi et al . 22 ; 4 - Huh et al . 24 ; 5 - Kuzmin et al .…”

“…In total, 1434 multisource data, including major ions, were obtained from both published datasets and unpublished field studies (Table 1). Among these data, (1) 159 datasets were from the ArcticGRO water quality data 20 and the GLObal RIver CHemistry (GLORICH) databases 21 ; (2) 928 water chemistry data were sourced from 10 published studies in both English [22][23][24][25][26] and Russian 17,18,[27][28][29] ); and (3) 347 unpublished datasets were provided by Gabysheva O.I. and Wang P. Chemical analyses of the waters sampled by research groups led by Gabysheva O.I.…”