Sermon at the annual Dudleian lecture, May 13th, 1772

The hand-sewn notebook contains a 108-page manuscript draft of the Dudleian lecture delivered by Benjamin Stevens on May 13, 1772 at Harvard College. The sermon begins with the Biblical text Heb. 1:1, 2. The copy includes a small number of edits and struck-out words. The cover page is no longer attached.

Warsaw, Poland, 1772 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Plan de Varsovie, lev� par ordre de son exece. Mr. Ct. Bielinski Grand Marechal de la couronne ; dedi� � son exce. Mr. Le Dte. Wielhorski Gd. aitre d'Hot�l du G.D. de Lithuanie Sarofte de Kaminiec par son tr�s hble. et tr�s obt. serviteur Rizzi Zannoni ; grav� par Chalmandrier ; Arrivet fecit. It was published in 1772. Scale [ca 1:17,000]. Covers Warsaw, Poland. Map in French.The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'Pulkovo 1942 Adjust 1958 Poland Zone II' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map.This map shows features such as roads, drainage, built-up areas and selected buildings, fortification, ground cover, and more. Relief shown by hachures. Includes index, aerial view: Vue de Varsovi du c�t� de la Viscule, and views of individual buildings.This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Data compilation of ESOP

The work in this sub-project of ESOP focuses on the advective and convective transforma-tion of water masses in the Greenland Sea and its neighbouring areas. It includes observational work on the sub-mesoscale and analysis of hydrographic data up to the gyre-scale. Observations of active convective plumes were made with a towed chain equipped with up to 80 CTD sensors, giving a horizontal and vertical resolution of the hydrographic fields of a few metres. The observed scales of the penetrative convective plumes compare well with those given by theory. On the mesoscale the structure of homogeneous eddies formed as a result of deep convection was observed and the associated mixing and renewal of the intermediate layers quantified. The relative importance and efficiency of thermal and haline penetrative convection in relation to the surface boundary conditions (heat and salt fluxes and ice cover) and the ambient stratification are studied using the multi year time series of hydro-graphic data in the central Greenland Sea. The modification of the water column of the Greenland Sea gyre through advection from and mixing with water at its rim is assessed on longer time scales. The relative contributions are quantified using modern water mass analysis methods based on inverse techniques. Likewise the convective renewal and the spreading of the Arctic Intermediate Water from its formation area is quantified. The aim is to budget the heat and salt content of the water column, in particular of the low salinity surface layer, and to relate its seasonal and interannual variability to the lateral fluxes and the fluxes at the air-sea-ice interface. This will allow to estimate residence times for the different layers of the Greenland Sea gyre, a quantity important for the description of the Polar Ocean carbon cycle.