Mean January air temperatures in Siberian permafrost at 20−18 ka BP and comparison with modern values
Fuente:
PANGAEA
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Dataset Open Access |
| Sprache: | en |
| Veröffentlicht: |
PANGAEA
2021
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1867169146308919296 |
|---|---|
| author | Vasil'chuk, Yurij K Vasil'chuk, Alla Constantinovna |
| author_facet | Vasil'chuk, Yurij K Vasil'chuk, Alla Constantinovna |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Palaeotemperature reconstruction for the period of 20−18 ka BP in Siberia is based on δ¹⁸O analysis and ¹⁴C dating of large syngenetic ice wedges of yedoma exposures from Yamal Peninsula to Chukotka. The modern relationship between δ¹⁸O composition of ice-wedge ice and winter temperature reveals Palaeotemperature reconstruction. Snow meltwater is considered to be the main source of ice-wedge ice. In modern ice wedges during the last 60–100 years δ¹⁸O fluctuates are between −14 and −20‰ in western Siberia and between −23 and −28‰ in northern Yakutia. The trend in δ¹⁸O distribution in ice wedges dated at 20−18 ka BP is similar to the modern one. δ¹⁸O values in Late Pleistocene wedges are more negative going from the west to the east: from −19 to −25‰ in western Siberian ice wedges to −30 to −35‰ in northern Yakutia. At 20−18 ka BP mean January temperatures were about 8–12°C lower (in Chukotka up to 17–18°C) than at present. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_933669 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mean January air temperatures in Siberian permafrost at 20−18 ka BP and comparison with modern values Vasil'chuk, Yurij K Vasil'chuk, Alla Constantinovna Age, dated; Aleshkinskaya_terrace; Ayon_Island; Cape_Sabler; Chekanovsky_Ridge; Chukotka, Russia; Duvanny_Yar-1; Ery_Maretayakha_River; Event label; Ice-wedge; Ice-wedge complex; Kotelny_M-2; Kotelny Island, Siberian, Russia; Krasivoe; Krasnoyarsk, Russia; Kular; Labaz_Lake_2; Labaz Lake; Location; Mamontov_Klyk_1; Mamontova_Gora-1; Mamontova_Khayata; Mayn_River; MULT; Multiple investigations; North Yakutia, Russia; Oxygen isotopes; Palaeotemperature reconstruction; Pit_Phoenix_Utinaya; Plakhinskii_Yar-1; Radiocarbon dating; Reference/source; Sakha Republic, Russia; Sample comment; Seyakha_River_2; Siberian permafrost; Syngenetic; Temperature, air, January; Temperature, air, monthly maximum; Temperature, air, monthly minimum; Vilyuy; winter air temperatures; Yamal-Nenets, Russia; Yamal Peninsula, northwestern Siberia; Yedoma; Zelyony_Mys_Settl; δ18O Palaeotemperature reconstruction for the period of 20−18 ka BP in Siberia is based on δ¹⁸O analysis and ¹⁴C dating of large syngenetic ice wedges of yedoma exposures from Yamal Peninsula to Chukotka. The modern relationship between δ¹⁸O composition of ice-wedge ice and winter temperature reveals Palaeotemperature reconstruction. Snow meltwater is considered to be the main source of ice-wedge ice. In modern ice wedges during the last 60–100 years δ¹⁸O fluctuates are between −14 and −20‰ in western Siberia and between −23 and −28‰ in northern Yakutia. The trend in δ¹⁸O distribution in ice wedges dated at 20−18 ka BP is similar to the modern one. δ¹⁸O values in Late Pleistocene wedges are more negative going from the west to the east: from −19 to −25‰ in western Siberian ice wedges to −30 to −35‰ in northern Yakutia. At 20−18 ka BP mean January temperatures were about 8–12°C lower (in Chukotka up to 17–18°C) than at present. |
| title | Mean January air temperatures in Siberian permafrost at 20−18 ka BP and comparison with modern values |
| topic | Age, dated; Aleshkinskaya_terrace; Ayon_Island; Cape_Sabler; Chekanovsky_Ridge; Chukotka, Russia; Duvanny_Yar-1; Ery_Maretayakha_River; Event label; Ice-wedge; Ice-wedge complex; Kotelny_M-2; Kotelny Island, Siberian, Russia; Krasivoe; Krasnoyarsk, Russia; Kular; Labaz_Lake_2; Labaz Lake; Location; Mamontov_Klyk_1; Mamontova_Gora-1; Mamontova_Khayata; Mayn_River; MULT; Multiple investigations; North Yakutia, Russia; Oxygen isotopes; Palaeotemperature reconstruction; Pit_Phoenix_Utinaya; Plakhinskii_Yar-1; Radiocarbon dating; Reference/source; Sakha Republic, Russia; Sample comment; Seyakha_River_2; Siberian permafrost; Syngenetic; Temperature, air, January; Temperature, air, monthly maximum; Temperature, air, monthly minimum; Vilyuy; winter air temperatures; Yamal-Nenets, Russia; Yamal Peninsula, northwestern Siberia; Yedoma; Zelyony_Mys_Settl; δ18O |
| url | https://doi.org/10.1594/PANGAEA.933669 |