Late Wisconsinan deglaciation of Emerald Basin, Scotian Shelf

Limits to Ice Thickness in Iowa During the Late Wisconsinan

Upper wisconsinan till recovered on the continental shelf southeast of new England.

Basal till was identified in two sediment cores collected about 69 kilometers southeast of Nantucket Island on the east and west sides of Great South Channel. These are the first samples of till collected on the outer continental shelf off the northeastern United States. The carbon-14 age of the total organic carbon in the tills provides a "no older than" age of about 20,000 years before presen...

The onset and evolution of a spring bloom on the Scotian Shelf

The spring bloom on the Scotian Shelf is examined using a mooring array deployed from 18 March 2002 to 18 April 2002 to provide physical, chemical, and biological measurements with high temporal and vertical resolution. These measurements are complemented by the Atlantic Zone Monitoring Program (AZMP) biweekly occupations of a station near the mooring site (HL2). Results from AZMP sampling and ...

Digital landscapes of deglaciation: Identifying Late Quaternary glacial lake outburst

High resolution DEMs obtained from LiDAR topographic data have led to 9 improved landform inventories (e.g. landslides and fault scarps) and understanding of 10 geomorphic event frequency. Here we use airborne LiDAR mapping to investigate 11 meltwater pathways associated with the Tweed Valley palaeo ice-stream (UK). In particular 12 we focus on a gorge downstream of Palaeolake Milfield, previou...

Seasonal and spatial variability in the CO2 system on the Scotian Shelf (Northwest Atlantic)

a r t i c l e i n f o As part of the Atlantic Zone Monitoring Program, dissolved inorganic carbon (DIC), total alkalinity, and nitrate measurements were made throughout the Scotian Shelf in 2007. A shelf-wide assessment of the spatio-temporal variability of the inorganic carbon system was made relying on observations in spring (April) and autumn (October). Over the 6-month period, a combination...