Marine Isotope Mataki na 5

Marine Isotope Stage 5 ko MIS 5 wani mataki ne na isotope na ruwa a cikin rikodin zafin jiki, tsakanin shekaru 130,000 da 80,000 da suka gabata. Mataki na MIS 5e ya dace da Interglacial na Ƙarshe, wanda ake kira Eemian (a Turai) ko Sangamonian (a Arewacin Amurka), babban lokaci na ƙarshe kafin Holocene, wanda ya kai har zuwa yau. Ana bincika lokutan Interglacial waɗanda suka faru a lokacin Pleistocene don fahimtar sauyin yanayi na yanzu da na gaba. Don haka, ana kwatanta interglacial na yanzu, Holocene, da MIS 5 ko interglacials na Marine Isotope Stage 11.

 Ƙananan matakai 
MIS 5, an raba shi zuwa ƙananan matakai, an raba shi a cikin haruffa ko tare da tsarin lambobi don ambaton "horizons" (al'amuran maimakon lokutan), tare da MIS 5.5 wakiltar matsayi mafi girma na MIS 5e, da 5.51, 5.52 da dai sauransu wakiltar tsaunuka da kwari na rikodin a matakin da ya fi cikakke.

 Mataki na Isotope na Marine (MIS) 5th 

Marine Isotope Stage (MIS) 5e, wanda ake kira Eemian (Ipswichian a Burtaniya) a kusa da shekaru 1,000-119,000 da suka gabata, shine lokacin interglacial na ƙarshe kafin yanzu (Holocene), kuma idan aka kwatanta matsakaicin yanayin zafi na duniya ya kasance aƙalla 2 ° C (3.6 ° F) mai dumi. Matsakaicin matakin teku ya kasance 4-6 m (13-20  sama da a halin yanzu, biyo bayan raguwar kankara na Greenland. Abubuwan da ke tattare da burbushin halittu suna nuna sauye-sauyen matakin teku har zuwa    a kusa da matsakaici. Dangane da bayanan da aka samo daga isotopes na isotopes of planktonic foraminifera da ƙuntatawa na shekaru daga murjani, kimantawa yana ba da shawarar matsakaicin ƙimar hauhawar matakin teku na   ft ) a kowace ƙarni. Binciken yana da mahimmanci don fahimtar canjin yanayi na yanzu, saboda yanayin zafi na duniya a lokacin MIS-5e yayi kama da canjin yanayi da aka tsara a yau.

Wani binciken da aka yi a shekarar 2015 ta hanyar masana masu tasowa a matakin teku sun kammala cewa bisa ga bayanan MIS 5e, tasowa a cikin teku na iya hanzarta a cikin shekaru masu zuwa, tare da ninka lokaci na shekaru 10, 20 ko 40. Nazarin ya bayyana cewa:

Wani binciken da aka yi a shekarar 2018 wanda ya danganci tsarin kogo a cikin Bahar Rum ya gano hauhawar matakin teku har zuwa mita 6, yana mai lura da cewa idan za a wuce zafin jiki na masana'antu da 1.5 zuwa 2 ° C, matakin teku zai amsa kuma ya tashi mita 2 zuwa 6 (6.6 zuwa 19.7 sama da matakin teku na yanzu. " [1] Shaida daga Bahamas da Bermuda sun ba da aikin guguwa mai ƙarfi a lokacin, mai ƙarfi don jigilar raƙuman ruwa, tuddai na chevron, da raƙuman raƙuman guguwa.[2]￼

 Sauran matakai 
Eemian ya biyo bayan raguwar zafin jiki a kusa da shekaru 116,000 da suka gabata da kuma MIS mai dumi 5c, daga kimanin shekaru 100,000 da suka gabata, mai yiwuwa lokacin da aka sani da Chelford Interstadial a Burtaniya. Rashin sanyi daga kimanin shekaru 90,000 da suka gabata ya biyo bayan MIS 5a mai dumi, kimanin shekaru 80,000 da suka wuce, wanda ake kira a Burtaniya Brimpton Interstadial . 

Daga MIS 5c zuwa MIS 5a, ko kuma daga kimanin shekaru 104,000 zuwa 82,000 da suka gabata, Indian Summer Monsoon (ISM) ya ragu a cikin ƙarfin gaba ɗaya.

 Dubi kuma 

 Rashin ruwa mai narkewa 1A
 Paleothermometer
 Wakilin (yanayi)
 Jerin lokaci na ƙanƙara

 Manazarta 

Rukuni:Shafuka masu fassarorin da ba'a duba ba