Atlantic 231Pa/230Th and biogenic opal compilation of the Holocene and the LGM

The strength and geometry of the Atlantic meridional overturning circulation is tightly coupled to climate on glacial-interglacial and millennial timescales, but has proved difficult to reconstruct, particularly for the Last Glacial Maximum. Today, the return flow from the northern North Atlantic to lower latitudes associated with the Atlantic meridional overturning circulation reaches down to approximately 4,000 m. In contrast, during the Last Glacial Maximum this return flow is thought to have occurred primarily at shallower depths. Measurements of sedimentary 231Pa/230Th have been used to reconstruct the strength of circulation in the North Atlantic Ocean, but the effects of biogenic silica on 231Pa/230Th-based estimates remain controversial. Here we use measurements of 231Pa/230Th ratios and biogenic silica in Holocene-aged Atlantic sediments and simulations with a two-dimensional scavenging model to demonstrate that the geometry and strength of the Atlantic meridional overturning circulation are the primary controls of 231Pa/230Th ratios in modern Atlantic sediments. For the glacial maximum, a simulation of Atlantic overturning with a shallow, but vigorous circulation and bulk water transport at around 2,000 m depth best matched observed glacial Atlantic 231Pa/230Th values. We estimate that the transport of intermediate water during the Last Glacial Maximum was at least as strong as deep water transport today.

Lettre de ... de la Planche aux auteurs du journal de médecine sur l'origine de la section du publis.

De la section de la symphyse des os pubis, 12 p. (Extrait du nº 16, 1781, des observations sur les maladies régnantes à Lyon / par Vitet & Petetin)

Lettres de Rois, Reines et Autres personnages des cours de France et dÁngleterre depuis Louis VII jusquá Henri IV : tirées des archives de Londres /

Contiene: Tom. I : De l'année 1162-1300 -- Tom. II : De l'année 1301 à l'année 1515.

Los seis libros de Galatea /

Mode of access: Internet.

Relacion historica del viage a la America Meridional hecho de orden de S. Mag. para medir algunos grados de meridiano terrestre y venir por ellos en conocimiento de la verdadera figura y magnitud de la tierra, con otras observaciones astronomicas y phisicas /

Contiene: Tabla de los libros y capitulos, parte II. - Erratas. - Segunda parte del viage al reyno del Perú con el fin de averiguar el valor de los grados terrestres del meridiano... - Libro Primero: trata de nuestro viage a Lima... - Libro segundo: Regreso de Lima a Quito...viage hecho a Guayaquil para poner en resguardo aquella ciudad contra la invasion que se temio de la escuadra inglesa comandada por el Vice-Almirante Anson, segundo viage a Lima y de alli a las islas de Juan Fernandez y costas de Chile...

Nuevo metodo para curar flatos, hypocondria, vapores y ataques hystéricos de las mugeres de todos estados y en todo estado, con el qual los enfermos podrán por sí cuidar de su salud en falta de médico que les dirija /

Mode of access: Internet.

Intelligentiarum diuinarum B. Mariae Magdalenae de Pazzis, Ordinis Carmelitarum : libri septem ... /

Mode of access: Internet.

Sawād al-ʻaynayn fī manāqib al-Ghawth Abī al-ʻAlamayn [microform] /

Microfilm.

O voennom iskustvi︠e︡ i zavoevanīi︠a︡kh mongolo-tartar i sredne- azīi︠a︡tskikh narodov pri Chingis-khani︠e︡ i Tamerlani︠e︡.

Mode of access: Internet.

A.I. Sobolevskīĭ. Opyt russkoĭ dīalektologīi. Vypusk 1. Nari︠e︡chīi︠a︡ velikorusskoe i bi︠e︡lorusskoe. S.-Peterburg 1897 /

"Otdi︠e︡lʹnyĭ ottisk iz Izvi︠e︡stīĭ Otdi︠e︡lenīi︠a︡ russkago i︠a︡zyka i slovesnosti Imperatorskoĭ Akademīi Nauk, t. II (1897 g.), kn. 4-oĭ, stran. 1157-1162."--P. 6.

明月記

Mode of access: Internet.

Sögur Noregs konúnga frá Magnúsi Berfætta til Magnúss Erlíngssonar.

Edited by R. K. Rask.

Li romans de Bauduin de Sebourc, IIIe roy de Jhérusale;

Ed. by M. L. Boca.