| 000 | 03789nlm1a2200529 4500 | ||
|---|---|---|---|
| 001 | 656186 | ||
| 005 | 20231030041417.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\22621 | ||
| 090 | _a656186 | ||
| 100 | _a20171030a2017 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aDE | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aPost-glacial flooding of the Bering Land Bridge dated to 11 cal ka BP based on new geophysical and sediment records _fM. Jakobsson [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: p. 1003-1005] | ||
| 330 | _aThe Bering Strait connects the Arctic and Pacific oceans and separates the North American and Asian landmasses. The presently shallow (~ 53 m) strait was exposed during the sea level lowstand of the last glacial period, which permitted human migration across a land bridge today referred to as the Bering Land Bridge. Proxy studies (stable isotope composition of foraminifera, whale migration into the Arctic Ocean, mollusc and insect fossils and paleobotanical data) have suggested a range of ages for the Bering Strait reopening, mainly falling within the Younger Dryas stadial (12.9-11.7 cal ka BP). Here we provide new information on the deglacial and post-glacial evolution of the Arctic-Pacific connection through the Bering Strait based on analyses of geological and geophysical data from Herald Canyon, located north of the Bering Strait on the Chukchi Sea shelf region in the western Arctic Ocean. Our results suggest an initial opening at about 11 cal ka BP in the earliest Holocene, which is later than in several previous studies. Our key evidence is based on a well-dated core from Herald Canyon, in which a shift from a near-shore environment to a Pacific-influenced open marine setting at around 11 cal ka BP is observed. The shift corresponds to meltwater pulse 1b (MWP1b) and is interpreted to signify relatively rapid breaching of the Bering Strait and the submergence of the large Bering Land Bridge. Although the precise rates of sea level rise cannot be quantified, our new results suggest that the late deglacial sea level rise was rapid and occurred after the end of the Younger Dryas stadial. | ||
| 461 |
_tClimate of the Past _ointernational scientific journal _d2005- |
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| 463 |
_tVol. 13, iss. 8 _v[P. 991-1005] _d2017 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aБерингов пролив | |
| 610 | 1 | _aледниковый период | |
| 610 | 1 | _aАрктика | |
| 610 | 1 | _aТихий океан | |
| 610 | 1 | _aшельфы | |
| 701 | 1 |
_aJakobsson _bM. _gMartin |
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| 701 | 1 |
_aCronin _bT. M. _gThomas M. |
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| 701 | 1 |
_aBackman _bJ. _gJan |
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| 701 | 1 |
_aAnderson _bL. G. _gLeif G. |
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| 701 | 1 |
_aBarrientos _bN. _gNatalia |
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| 701 | 1 |
_aBjork _bG. _gGoran |
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| 701 | 1 |
_aCoxall _bH. _gHelen |
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| 701 | 1 |
_aDe Boer _bA. _gAgatha |
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| 701 | 1 |
_aMayer _bL. _gLarry |
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| 701 | 1 |
_aMorth _bC.-M. _gCarl- Magnus |
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| 701 | 1 |
_aNilsson _bJ. _gJohan |
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| 701 | 1 |
_aRattray _bJ. E. _gJayne E. |
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| 701 | 1 |
_aStranne _bC. _gChristian |
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| 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 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра геологии и разведки полезных ископаемых (ГРПИ) _h2181 _2stltpush _3(RuTPU)RU\TPU\col\18660 |
| 801 | 2 |
_aRU _b63413507 _c20171030 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.5194/cp-13-991-2017 | |
| 942 | _cCF | ||