Sedimentological, mineralogical, biogeochemical and micropaleontological parameters on sediment core PS69/849-2, Burton Basin, MacRobertson Shelf, East Antarctica

A multi-proxy study including sedimentological, mineralogical, biogeochemical and micropaleontological methods was conducted on sediment core PS69/849-2 retrieved from Burton Basin, MacRobertson Shelf, East Antarctica. The goal of this study was to depict the deglacial and Holocene environmental history of the MacRobertson Land-Prydz Bay region. A special focus was put on the timing of ice-sheet retreat and the variability of bottom-water formation due to sea ice formation through the Holocene. Results from site PS69/849-2 provide the first paleo-environmental record of Holocene variations in bottom-water production probably associated to the Cape Darnley polynya, which is the second largest polynya in the Antarctic. Methods included end-member modeling of laser-derived high-resolution grain size data to reconstruct the depositional regimes and bottom-water activity. The provenance of current-derived and ice-transported material was reconstructed using clay-mineral and heavy-mineral analysis. Conclusions on biogenic production were drawn by determination of biogenic opal and total organic carbon. It was found that the ice shelf front started to retreat from the site around 12.8 ka BP. This coincides with results from other records in Prydz Bay and suggests warming during the early Holocene optimum next to global sea level rise as the main trigger. Ice-rafted debris was then supplied to the site until 5.5 cal. ka BP, when Holocene global sea level rise stabilized and glacial isostatic rebound on MacRobertson Land commenced. Throughout the Holocene, three episodes of enhanced bottom-water activity probably due to elevated brine rejection in Cape Darnley polynya occured between 11.5 and 9 cal. ka BP, 5.6 and 4.5 cal. ka BP and since 1.5 cal. ka BP. These periods are related to shifts from warmer to cooler conditions at the end of Holocene warm periods, in particular the early Holocene optimum, the mid-Holocene warm period and at the beginning of the neoglacial. In contrast, between 7.7 and 6.7 cal. ka BP, brine rejection shut down, maybe owed to warm conditions and pronounced open-water intervals.

On the Southern Ocean CO2 uptake and the role of the biological carbon pump in the 21st century, links to supplementary material

We use a suite of eight ocean biogeochemical/ecological general circulation models from the MAREMIP and CMIP5 archives to explore the relative roles of changes in winds (positive trend of Southern Annular Mode, SAM) and in warming- and freshening-driven trends of upper ocean stratification in altering export production and CO2 uptake in the Southern Ocean at the end of the 21st century. The investigated models simulate a broad range of responses to climate change, with no agreement ona dominance of either the SAM or the warming signal south of 44° S. In the southernmost zone, i.e., south of 58° S, they concur on an increase of biological export production, while between 44 and 58° S the models lack consensus on the sign of change in export. Yet, in both regions, the models show an enhanced CO2 uptake during spring and summer. This is due to a larger CO 2 (aq) drawdown by the same amount of summer export production at a higher Revelle factor at the end of the 21st century. This strongly increases the importance of the biological carbon pump in the entire Southern Ocean. In the temperate zone, between 30 and 44° S all models show a predominance of the warming signal and a nutrient-driven reduction of export production. As a consequence, the share of the regions south of 44° S to the total uptake of the Southern Ocean south of 30° S is projected to increase at the end of the 21st century from 47 to 66% with a commensurable decrease to the north. Despite this major reorganization of the meridional distribution of the major regions of uptake, the total uptake increases largely in line with the rising atmospheric CO2. Simulations with the MITgcm-REcoM2 model show that this is mostly driven by the strong increase of atmospheric CO2, with the climate-driven changes of natural CO2 exchange offsetting that trend only to a limited degree (~10%) and with negligible impact of climate effects on anthropogenic CO2 uptake when integrated over a full annual cycle south of 30° S.

Arnolt Schlick's Spiegel der Orgelmacher und Organisten, Heidelberg MDXI (Mainz bei Peter Schoeffer)

With reproduction of original t.-p.

De Roma prisca et nova varii auctores prout in sequenti pagella cernere est.

Contains Francesco Albertini's Opusculum de mirabilibus novae et veteris urbis Romae, leaves I-LXXX, which includes a reference to Vespucci, leaf LXXX.

A remembraunce of the precious vertues of the right Honourable and reuerend Iudge, Sir Iames Dier ... who disseased at great Stawghton, in Huntingdonshire, the 24. of Marche, Anno. 1582.

"Reproduced from the copy in the Henry E. Huntington Library."

Die mensuraltheorie des Franchinus Gafurius und der folgenden zeit bis zur mitte des 16. jahrhunderts,

"Quellenwerke": p. 2-8.

Advertencias a el previlegio onzeno de los de el señor rey don Juan el primero de Aragon, en favor de la fiesta y mysterio de la concepción de la beatissima Virgen Maria sin mancha de pecado original /

"Con una constitución de Cataluña, y otro Fuero de Aragon del señor Rey don Iuan el segundo, en la misma materia."

The art and genius of Tintoret,

"Authentic works by Tintoret in public and private collections and churches": v. 2, p. [177]-214.

The Holy Family

Joos van Cleve; 1 ft. 4 47/64 in.x ft. 33/64 in.q; oil on wood

The romance of the Floridas; the finding and the founding,

Maps on lining-papers.

Historia de los reyes católicos D. Fernando y Doña Isabel /

Vol. 1 contains a list of the members; v. 2 a list of the publications of the society.

Obras completas /

Includes bibliographical references.

Hernan Perez del Pulgar, el de Las hazanas. Bosquejo historico.

Contains also Breve parte de Las hazans del excelente nombrado Gran Capitan. p. 131-226.

The manuscripts of Henry Duncan Skrine, esq. Salvetti correspondence.

Letters of Amerigo Salvetti, Tuscan representative at the British court, to the Grand Duke of Tuscany. These letters, written from April, 1625, to December, 1628, were in Tuscan dialect and partly in cipher: the translation was made by H. Wilson of Florence. cf. p.[1]

Comentaria Iacobi de Marquilles super vsaticis Barchin[one]

Mode of access: Internet.