| 000 | 03930nlm1a2200577 4500 | ||
|---|---|---|---|
| 001 | 666409 | ||
| 005 | 20231030042036.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\37613 | ||
| 035 | _aRU\TPU\network\35738 | ||
| 090 | _a666409 | ||
| 100 | _a20211223a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aDynamics of Dissolved Carbon in the Mainstem of the Lena River in July 2017 _fI. I. Pipko, S. P. Pugach, Yu. A. Moiseeva [et al.] |
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| 203 |
_aText _celectronic |
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| 225 | 1 | _aGeochemistry | |
| 300 | _aTitle screen | ||
| 320 | _a[References: 19 tit.] | ||
| 330 | _aThe dynamics of dissolved carbon forms in the waters of the mainstem of the Lena River from the middle reaches (the city of Yakutsk) to the nearshore zone of the Laptev Sea was investigated in July 2017. It is shown that, in the summer period, the river waters were a source of CO2 to the atmosphere and the Arctic shelf. The rate of CO2 outgassing into the atmosphere varied from 0.8 to 137.9 mmol m-2 day-1 at an average value of 31.3 mmol m-2 day-1. The highest spatial variability of the hydrochemical and hydrooptical parameters was observed in the middle reaches of the river, which was determined by the river hydrograph and the influence of the tributaries. The observed differences in the average values of the parameters studied, calculated for the two sections of the river, were formed during the high rainfall flood in the middle reaches and the summer baseflow in the lower reaches. The analysis of the qualitative composition of dissolved organic matter (DOM), based on its optical characteristics, showed the presence of the more labile DOM in the middle reaches of the river as compared to the lower ones. A relationship is established between the optical characteristics and the composition of DOM with the concentrations of dissolved CO2 in the mainstem of the Lena River. It is shown that the optical parameters of waters are a useful tool for understanding the dynamics and quality of river DOM and its relationship with the CO2 fluxes in the Arctic rivers. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 338 |
_bРоссийский научный фонд _d21-17-00027 |
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| 338 |
_bРоссийский научный фонд _d21-77-30001 |
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| 338 |
_bРоссийский фонд фундаментальных исследований _d20-05-00545 |
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| 461 | _tDoklady Earth Sciences | ||
| 463 |
_tVol. 500, iss. 2 _v[P. 882-889] _d2021 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aArctic rivers | |
| 610 | 1 | _adissolved carbon | |
| 610 | 1 | _acarbonate system | |
| 610 | 1 | _aСО2 fluxes | |
| 610 | 1 | _apermafrost | |
| 610 | 1 | _aclimate | |
| 610 | 1 | _aарктические реки | |
| 610 | 1 | _aрастворенный углерод | |
| 610 | 1 | _aкарбонатные системы | |
| 610 | 1 | _aвечная мерзлота | |
| 610 | 1 | _aклимат | |
| 701 | 1 |
_aPipko _bI. I. _gIrina Ivanovna |
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| 701 | 1 |
_aPugach _bS. P. _gSvetlana Petrovna |
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| 701 | 1 |
_aMoiseeva _bYu. A. _chydrogeologist _cengineer of Tomsk Polytechnic University _f1993- _gYuliya Aleksandrovna _2stltpush _3(RuTPU)RU\TPU\pers\42878 |
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| 701 | 1 |
_aDudarev _bO. V. _gOleg Viktorovich |
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| 701 | 1 |
_aRepina _bI. A. _gIrina |
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| 701 | 1 |
_aSergienko _bV. I. _gVladimir Ivanovich |
|
| 701 | 1 |
_aSemiletov _bI. P. _gIgor Petrovich |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа природных ресурсов _bОтделение геологии _h8083 _2stltpush _3(RuTPU)RU\TPU\col\23542 |
| 801 | 2 |
_aRU _b63413507 _c20211223 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1134/S1028334X21100135 | |
| 942 | _cCF | ||