Tephrochronological dating of paleoearthquakes in active volcanic arcs: A case of the Eastern Volcanic Front on the Kamchatka Peninsula (northwest Pacific)

2019 ◽  
Vol 35 (1-2) ◽  
pp. 349-361 ◽  
Author(s):  
Egor Zelenin ◽  
Andrey Kozhurin ◽  
Vera Ponomareva ◽  
Maxim Portnyagin
Author(s):  
Vera Ponomareva ◽  
Ivan Melekestsev ◽  
Olga Braitseva ◽  
Tatiana Churikova ◽  
Maria Pevzner ◽  
...  

2016 ◽  
Author(s):  
Vera D. Meyer ◽  
Jens Hefter ◽  
Gerrit Lohmann ◽  
Ralf Tiedemann ◽  
Gesine Mollenhauer

Abstract. Little is known about the climate evolution on the Kamchatka Peninsula during the last deglaciation as existing climate records do not reach beyond 12 ka BP. In this study, a summer-temperature record for the past 20 ka is presented. Branched Glycerol Dialkyl Glycerol Tetraethers, terrigenous biomarkers suitable for continental air temperature reconstructions, were analyzed in a sediment core from the western continental margin off Kamchatka/marginal Northwest Pacific (NW Pacific). The record reveals that summer temperatures on Kamchatka during the Last Glacial Maximum (LGM) equaled modern. We suggest that strong southerly winds associated with a pronounced North Pacific High pressure system over the subarctic NW Pacific accounted for the warm conditions. A comparison with outputs from an Earth System Model reveals discrepancies between model and proxy-based reconstructions for the LGM-temperature and atmospheric circulation in the NW Pacific realm. The deglacial temperature development is characterized by abrupt millennial-scale temperature oscillations. The Bølling/Allerød warm-phase and the Younger Dryas cold-spell are pronounced events, providing evidence for a strong impact of North-Atlantic climate variability on temperature development in southeastern Siberia. Summer insolation and teleconnections with the North Atlantic determine the long-term temperature development during the Holocene.


2017 ◽  
Vol 102 (8) ◽  
pp. 1736-1746 ◽  
Author(s):  
Victor Okrugin ◽  
Michael Favero ◽  
Amelia Liu ◽  
Barbara Etschmann ◽  
Ekaterina Plutachina ◽  
...  

2017 ◽  
Vol 13 (4) ◽  
pp. 359-377 ◽  
Author(s):  
Vera D. Meyer ◽  
Jens Hefter ◽  
Gerrit Lohmann ◽  
Lars Max ◽  
Ralf Tiedemann ◽  
...  

Abstract. Little is known about the climate evolution on the Kamchatka Peninsula during the last glacial–interglacial transition as existing climate records do not reach beyond 12 ka BP. In this study, a summer temperature record for the past 20 kyr is presented. Branched glycerol dialkyl glycerol tetraethers, terrigenous biomarkers suitable for continental air temperature reconstructions, were analyzed in a sediment core from the western continental margin off Kamchatka in the marginal northwest Pacific (NW Pacific). The record suggests that summer temperatures on Kamchatka during the Last Glacial Maximum (LGM) equaled modern temperatures. We suggest that strong southerly winds associated with a pronounced North Pacific High pressure system over the subarctic NW Pacific accounted for the warm conditions. A comparison with an Earth system model reveals discrepancies between model and proxy-based reconstructions for the LGM temperature and atmospheric circulation in the NW Pacific realm. The deglacial temperature development is characterized by abrupt millennial-scale temperature oscillations. The Bølling–Allerød warm phase and the Younger Dryas cold spell are pronounced events, suggesting a connection to North Atlantic climate variability.


2021 ◽  
Vol 169 ◽  
pp. 112498
Author(s):  
Maksim M. Donets ◽  
Vasiliy Yu. Tsygankov ◽  
Alexandr N. Gumovskiy ◽  
Yulia P. Gumovskaya ◽  
Margarita D. Boyarova ◽  
...  

2001 ◽  
Vol 28 (1) ◽  
pp. 71-122 ◽  
Author(s):  
ERIC W. GROVES

ABSTRACT: This paper includes a short biography of Menzies and an outline of the historical events on the northwest Pacific coast leading up to Vancouver's voyage. A table listing the botanical visitors to that area prior to 1792 is given followed by a résumé of the evolution of Menzies's journal. Sources used in compiling the chronology of his movements during Vancouver's voyage are then set down, ending the section with an account of Menzies's own visit, 1792–1794. His method of plant collecting is discussed along with an account of his collections and their subsequent disposal. The paper concludes with details of Menzies's later life, his connection with other botanists of the day, and an assessment of his achievements.


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