| 000 | 03161nlm1a2200493 4500 | ||
|---|---|---|---|
| 001 | 669003 | ||
| 005 | 20231030042207.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\40240 | ||
| 035 | _aRU\TPU\network\38142 | ||
| 090 | _a669003 | ||
| 100 | _a20230207a2022 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aOrganic matter composition and greenhouse gas production of thawing subsea permafrost in the Laptev Sea _fB. Wild, N. E. Shakhova, A. S. Ruban [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 74 tit.] | ||
| 330 | _aSubsea permafrost represents a large carbon pool that might be or become a significant greenhouse gas source. Scarcity of observational data causes large uncertainties. We here use five 21-56 m long subsea permafrost cores from the Laptev Sea to constrain organic carbon (OC) storage and sources, degradation state and potential greenhouse gas production upon thaw. Grain sizes, optically-stimulated luminescence and biomarkers suggest deposition of aeolian silt and fluvial sand over 160 000 years, with dominant fluvial/alluvial deposition of forest- and tundra-derived organic matter. We estimate an annual thaw rate of 1.3 ± 0.6 kg OC m?2 in subsea permafrost in the area, nine-fold exceeding organic carbon thaw rates for terrestrial permafrost. During 20-month incubations, CH4 and CO2 production averaged 1.7 nmol and 2.4 µmol g?1 OC d?1, providing a baseline to assess the contribution of subsea permafrost to the high CH4 fluxes and strong ocean acidification observed in the region. | ||
| 461 | _tNature Communications | ||
| 463 |
_tVol. 13 _v[5057, 12 р.] _d2022 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _acarbon cycle | |
| 701 | 1 |
_aWild _bB. _gBirgit |
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| 701 | 1 |
_aShakhova _bN. E. _gNataljya Evgenjevna |
|
| 701 | 1 |
_aRuban _bA. S. _cgeologist _cengineer of Tomsk Polytechnic University _f1991- _gAleksey Sergeevich _2stltpush _3(RuTPU)RU\TPU\pers\34023 |
|
| 701 | 1 |
_aKosmach _bD. A. _gDenis Alekseevich |
|
| 701 | 1 |
_aTumskoy _bV. E. _gVladimir |
|
| 701 | 1 |
_aTesi _bT. _gTommaso |
|
| 701 | 1 |
_aGrimm _bH. _gHanna |
|
| 701 | 1 |
_aNybom _bI. _gInna |
|
| 701 | 1 |
_aMatsubara _bF. _gFelipe |
|
| 701 | 1 |
_aAlexanderson _bH. _gHelena |
|
| 701 | 1 |
_aJakobsson _bM. _gMartin |
|
| 701 | 1 |
_aMazurov _bA. K. _cgeologist _cProfessor of Tomsk Polytechnic University, Doctor sciences _f1951- _gAleksey Karpovich _2stltpush _3(RuTPU)RU\TPU\pers\30165 |
|
| 701 | 1 |
_aSemiletov _bI. P. _cgeographer _cProfessor of Tomsk Polytechnic University, doctor of geographical Sciences _f1955- _gIgor Petrovich _2stltpush _3(RuTPU)RU\TPU\pers\34220 |
|
| 701 | 1 |
_aGustafsson _bO. _gOrjan |
|
| 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 _c20230207 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1038/s41467-022-32696-0 | |
| 942 | _cCF | ||