Change in the North Atlantic circulation associated with the mid-Pleistocene transition

The southwestern Iberian margin is highly sensitive to changes in the distribution of North Atlantic currents and to the position of oceanic fronts. In this work, the evolution of oceanographic parameters from 812 to 530 ka (MIS20-MIS14) is studied based on the analysis of planktonic foraminifer assemblages from site IODP-U1385 (37 degrees 34.285' N, 10 degrees 7.562' W; 2585m b.s.l.). By comparing the obtained results with published records from other North Atlantic sites between 41 and 55 degrees N, basin-wide paleoceano-graphic conditions are reconstructed. Variations of assemblages dwelling in different water masses indicate a major change in the general North Atlantic circulation during MIS16, coinciding with the definite establishment of the 100 ky cyclicity associated with the mid-Pleistocene transition. At the surface, this change consisted in the redistribution of water masses, with the subsequent thermal variation, and occurred linked to the northwestward migration of the Arctic Front (AF), and the increase in the North Atlantic Deep Water (NADW) formation with respect to previous glacials. During glacials prior to MIS16, the NADW formation was very weak, which drastically slowed down the surface circulation; the AF was at a southerly position and the North Atlantic Current (NAC) diverted southeastwards, developing steep south-north, and east-west, thermal gradients and blocking the arrival of warm water, with associated moisture, to high latitudes. During MIS16, the increase in the meridional overturning circulation, in combination with the northwestward AF shift, allowed the arrival of the NAC to subpolar latitudes, multiplying the moisture availability for ice-sheet growth, which could have worked as a positive feedback to prolong the glacials towards 100 ky cycles.info:eu-repo/semantics/publishedVersio

Spartan Daily, November 14, 2018

Volume 151, Issue 36https://scholarworks.sjsu.edu/spartan_daily_2018/1078/thumbnail.jp

Spartan Daily, February 14, 2018

Volume 150, Issue 9https://scholarworks.sjsu.edu/spartan_daily_2018/1008/thumbnail.jp

The undiscovered auditions, 2018-03-14

Auditions for the undiscovered: a night for the arts open to all students featuring deep love, transcendent peace, and authentic community.Boston University Howard Thurman Center for Common Groun

Mengagumkan, Hasil Desain Gadis Difabel Ini Dipakai Ivan Gunawan

Bermimpi ingin menjadi seorang desainer handal, kini gadis difabel asal Pekalongan ini tengah berusaha mengejar cita-citanya itu. Melansir berbagai sumber, Jumat (2/2/2018) Windy bersama ayahnya, Karsiden dan seorang pendamping berangkat dari Pekalongan menuju Jakarta. Sebelumnya, Windi pernah mengatakan jika dirinya sangat mengagumi Ivan Gunawan dan ingin bertemu dengan idolanya tersebut, dan kini mimpi tersebut menjadi kenyataan. Tak sampai di situ, mimpi Windi untuk menjadi seorang desainer pun sepertinya akan terwujud seiring pertemuannya dengan Ivan Gunawan yang menggunakan desain buatannya

The Cowl - v.82 - n.14 - Jan 25, 2018

The Cowl - student newspaper of Providence College. Volume 82, Number 14 - January 25, 2018. 24 pages

November 14, 2018

https://egrove.olemiss.edu/thedmonline/1114/thumbnail.jp

September 14, 2018

https://egrove.olemiss.edu/thedmonline/1080/thumbnail.jp