Abubuwan da suka faru
 Abubuwan da suka faru | |
|---|---|
| Bayanai | |
| Suna saboda |
Gerard Clark Bond (en)  |
Abubuwan da suka faru na Bond sune abubuwan da suka faru a kankara na Arewacin Atlantic waɗanda c. 1,500-year ya nemi ya haɗa su da sauye-sauyen yanayi a cikin Holocene. An gano irin waɗannan abubuwan guda takwas. A baya an yi imanin abubuwan da suka faru na Bond suna nuna kusan kusan kusan shekara 1,500, amma yanzu an sanya farkon lokacin bambancin a kusan shekara 1,000.[1][2]
c. 1,500 ± 500-year na Lamont-Doherty Earth Observatory, a Jami'ar Columbia, shi ne babban marubucin takarda na 1997 wanda ya gabatar da ka'idar sauyin yanayi na shekaru 1470 a cikin Late Pleistocene da Holocene, galibi ya dogara ne akan alamun petrologic na kankara a Arewacin Atlantic.[1][3] Koyaya, aikin da aka yi kwanan nan a shafin guda ɗaya ya ba da shawarar cewa masu ganowa ba su ba da isasshen tallafi ga shekarun 1,500 na canjin yanayi ba kuma sun ba da shawarar gore rahoton c. 1,500 ± 500-shekara ya kasance kayan tarihi ne na ƙididdiga.[2]
Bugu da ƙari, bayan da aka buga Greenland Ice Core Chronology 2005 (GICC05) [4] don Arewacin Greenland Ice core Project, ya zama bayyananne cewa Abubuwan da suka faru na Dansgaard-Oeschger ba su nuna irin wannan tsari ba.[2][5][6] Abubuwan da suka faru na kankara na Arewacin Atlantic sun faru ne tare da abubuwan da suka faru a matakin tafkin da aka rage a yankin Mid-Atlantic na Amurka, abubuwan da suka fi rauni [bayyanawa da ake buƙata] abubuwan da suka shafi ruwan sama na Asiya aƙalla shekaru 9,000 da suka gabata kuma tare da mafi yawan abubuwan da suka gabata a Gabas ta Tsakiya na shekaru 55,000 da suka gabata (dukansu abubuwan Heinrich da Bond [7]).[8][9][10][11]
Jerin
[gyara sashe | gyara masomin]
Yawancin abubuwan da suka faru na Bond ba su da siginar yanayi; wasu sun dace da lokutan sanyaya, amma wasu sun dace tare da bushewa a wasu yankuna. Rashin tsakanin abubuwan da suka faru an kiyasta ya zama shekaru 1,000-1,500, [2] [1] tare da taron Bond # 4 a matsayin bayanan bayanai.
Tasiri a cikin yanayin yanki
[gyara sashe | gyara masomin]
An gano abubuwan da suka faru a yankuna masu nisa kamar tsakiyar Andes na Kudancin Amurka.[12] Har zuwa sauye-sauye shida na Bond a lokacin Holocene na sama da na tsakiya an gano su a cikin rikodin kankara guda uku na Andes na wurare masu zafi. An cire bayanan daga taron koli na Nevader Sajama, Nevado Huascarán, da Nevado Illimani. Hanyoyin da aka gano sun kasance a shekaru 6400 Kafin Yanzu (BP), shekaru 5500 BP, shekaru 3700 BP, shekaru 2700 BP, shekarun 1300 BP, da shekaru 200 BP kuma suna wakiltar saukowar zafin jiki.
Dubi kuma
[gyara sashe | gyara masomin]- Abin da ya faru na Heinrich
- Yanayin kankara
Manazarta
[gyara sashe | gyara masomin]- ↑ 1.0 1.1 1.2 Bond, G.; et al. (2001). "Persistent Solar Influence on North Atlantic Climate During the Holocene". Science. 294 (5549): 2130–2136. Bibcode:2001Sci...294.2130B. doi:10.1126/science.1065680. PMID 11739949. S2CID 38179371. Cite error: Invalid
<ref>tag; name ":0" defined multiple times with different content - ↑ 2.0 2.1 2.2 2.3 Obrochta, Stephen P.; Miyahara, Hiroko; Yokoyama, Yusuke; Crowley, Thomas J. (2012-11-08). "A re-examination of evidence for the North Atlantic "1500-year cycle" at Site 609". Quaternary Science Reviews. 55: 23–33. Bibcode:2012QSRv...55...23O. doi:10.1016/j.quascirev.2012.08.008. Cite error: Invalid
<ref>tag; name ":1" defined multiple times with different content - ↑ Bond, G.; et al. (1997). "A Pervasive Millennial-Scale Cycle in North Atlantic Holocene and Glacial Climates" (PDF). Science. 278 (5341): 1257–1266. Bibcode:1997Sci...278.1257B. doi:10.1126/science.278.5341.1257. S2CID 28963043. Archived from the original (PDF) on 2008-02-27.
- ↑ Svensson, A.; Andersen, K. K.; Bigler, M.; Clausen, H. B.; Dahl-Jensen, D.; Davies, S. M.; Johnsen, S. J.; Muscheler, R.; Parrenin, F. (2008-03-31). "A 60 000 year Greenland stratigraphic ice core chronology" (PDF). Clim. Past. 4 (1): 47–57. Bibcode:2008CliPa...4...47S. doi:10.5194/cp-4-47-2008.
- ↑ Ditlevsen, P. D.; Andersen, K. K.; Svensson, A. (2007-02-28). "The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle". Clim. Past. 3 (1): 129–134. Bibcode:2007CliPa...3..129D. doi:10.5194/cp-3-129-2007.
- ↑ Obrochta, Stephen P.; Yokoyama, Yusuke; Morén, Jan; Crowley, Thomas J. (2014-04-01). "Conversion of GISP2-based sediment core age models to the GICC05 extended chronology". Quaternary Geochronology. 20: 1–7. Bibcode:2014QuGeo..20....1O. doi:10.1016/j.quageo.2013.09.001.
- ↑ Li, Yong-Xiang; Yu, Zicheng; Kodama, Kenneth P. (2007). "Sensitive moisture response to Holocene millennial-scale climate variations in the Mid-Atlantic region, USA". The Holocene. 17 (1): 3–8. Bibcode:2007Holoc..17....3L. doi:10.1177/0959683606069386. S2CID 2206358.
- ↑ Gupta, Anil K.; Anderson, David M.; Overpeck, Jonathan T. (2003). "Abrupt changes in the Asian southwest monsoon during the Holocene and their links to the North Atlantic Ocean". Nature. 421 (6921): 354–357. Bibcode:2003Natur.421..354G. doi:10.1038/nature01340. PMID 12540924. S2CID 4304234.
- ↑ Yongjin Wang; et al. (2005). "The Holocene Asian Monsoon: Links to Solar Changes and North Atlantic Climate" (PDF). Science. 308 (5723): 854–857. Bibcode:2005Sci...308..854W. doi:10.1126/science.1106296. PMID 15879216. S2CID 54532439.
- ↑ Bartov, Yuval; Goldstein, Steven L.; Stein, Mordechai; Enzel, Yehouda (2003). "Catastrophic arid episodes in the Eastern Mediterranean linked with the North Atlantic Heinrich events". Geology. 31 (5): 439–442. Bibcode:2003Geo....31..439B. doi:10.1130/0091-7613(2003)031<0439:CAEITE>2.0.CO;2.
- ↑ Parker, Adrian G.; et al. (2006). "A record of Holocene climate change from lake geochemical analyses in southeastern Arabia". Quaternary Research. 66 (3): 465–476. Bibcode:2006QuRes..66..465P. doi:10.1016/j.yqres.2006.07.001. S2CID 140158532.
- ↑ Fernández - Sánchez, Adrián; Martín - Chivelet, Javier (2016). "A Revisión de la estratigrafía del d18O en sondeos de hielo de glaciares en los Andes Centrales: Implicaciones para la variabilidad climática del Holoceno". Geotemas. Journal of the Geological Society of Spain. 16: 565–568.