Overview of Submitted Database Referencing Piston Core P1-92-AR The submitted database consists of various paleoceanographic parameters (proxies) measured on the sediment sampled from piston core P1 and the companion boxcore B3 taken at Latitude 73 42.40'N and Latitude 162 44.60'W in 201 meters water depth at the edge of the Chukchi Sea shelf. The cores were collected by Larry Phillips (USGS, Menlo Park) aboard the USCGC Polar Star in 1992 and stored at 4C and wrapped in plastic until sampled in 1998/1999. The cores were in good condition when sampled and showed no signs of oxidation or other alteration except minor shrinkage or compaction based on slight differences between initial logs (1992) and measured lengths of core sections at the time of sampling. The P1 core was 7cm in width and 429 cm in length but measured only 410cm in 1998. Most of the difference could be accounted for by a void at the top of each core segment that might have been caused by settling/compaction due to storage of the core segments in a vertical position on the ship. The core was initially cut into 4 segments, each about 1 meter in length, split lengthwise, and separated for logging which consisted of color photographs, visual descriptions, bulk density, magnetic susceptibility, and P-wave velocity. In addition, P1 was X-rayed before opening to determine the gross texture and lithologic changes in the core. Boxcore B3 was not split until sampling in 1999. It was one of several 10cm diameter tubes inserted in a 50x50x50cm boxcore and capped before extraction. B3 was sealed and refrigerated until opening, splitting, and sampling. The sampling in 1998/1999 consisted of 1cm thick slices of both the working and archive halves of the core for the top five centimeters of P1 and the entire 42cm length of B3. The rest of P1 was sampled by taking 2cm slices every 5cm centered at 10, 15, 20cm etc. down to 410cm. Additional samples of 3cm thickness between each of the 2cm thick samples were taken from the working half only. These 3cm thick samples were analyzed as needed, but all of the 2 and 1cm thick samples were analyzed. Separate samples of about 5-10cc were collected and sent to deVernal and Hillaire-Marcel at GEOTOP for isotope analysis on foraminifera and floral (dinoflagellate) analyses. A 10-20cc split of the larger volume samples were provided to Cutter and McManus for geochemical analyses. The remaining samples (approximately 50cc) were freeze-dried, weighed, and dispersed in water with Na-hexametaphosphate with stirring before wet-sieving with de-ionized water through 250m (0.25mm), 150m, 63m, and 45m stainless steel sieves. The sediment less than 45m was collected, flocculated with NaCl, excess water decanted, and dried at 40C. Some of this material was lost in this operation, so this size fraction was not weighed routinely. All of the other size fractions were dried at 100C and weighed to 0.001g. This weight data was used to obtain the textural data reported in this dataset. Piston core P1 was later determined to be missing the actual top 20 cm of sediment from the floor of the ocean due blow-bye during coring. Fortunately this does not occur in boxcores. B3 contains the entire sediment section to a depth of 42cm and P1 begins at 20 cm based on radiocarbon dating in both cores and the appearance of a detrital dolomite percentage peak at 5cm depth in P1 and at 25cm depth in B3.