(Table S1) Age determination of ODP Site 165-1002

A series of 14C measurements in Ocean Drilling Program cores from the tropical Cariaco Basin, which have been correlated to the annual-layer counted chronology for the Greenland Ice Sheet Project 2 (GISP2) ice core, provides a high-resolution calibration of the radiocarbon time scale back to 50,000 years before the present. Independent radiometric dating of events correlated to GISP2 suggests that the calibration is accurate. Reconstructed 14C activities varied substantially during the last glacial period, including sharp peaks synchronous with the Laschamp and Mono Lake geomagnetic field intensity minimal and cosmogenic nuclide peaks in ice cores and marine sediments. Simulations with a geochemical box model suggest that much of the variability can be explained by geomagnetically modulated changes in 14C production rate together with plausible changes in deep-ocean ventilation and the global carbon cycle during glaciation.

(Table 2) Age determination of sediment cores from the Panama Basin

Application of the 230Th normalization method to estimate sediment burial fluxes in six cores from the eastern equatorial Pacific (EEP) reveals that bulk sediment and organic carbon fluxes display a coherent regional pattern during the Holocene that is consistent with modern oceanographic conditions, in contrast with estimates of bulk mass accumulation rates (MARs) derived from core chronologies. Two nearby sites (less than 10 km apart), which have different MARs, show nearly identical 230Th-normalized bulk fluxes. Focusing factors derived from the 230Th data at the foot of the Carnegie Ridge in the Panama Basin are >2 in the Holocene, implying that lateral sediment addition is significant in this part of the basin. New geochemical data and existing literature provide evidence for a hydrothermal source of sediment in the southern part of the Panama Basin and for downslope transport from the top of the Carnegie Ridge. The compilation of core records suggests that sediment focusing is spatially and temporally variable in the EEP. During oxygen isotope stage 2 (OIS 2, from 13-27 ka BP), focusing appears even higher compared to the Holocene at most sites, similar to earlier findings in the eastern and central equatorial Pacific. The magnitude of the glacial increase in focusing factors, however, is strongly dependent on the accuracy of age models. We offer two possible explanations for the increase in glacial focusing compared to the Holocene. The first one is that the apparent increase in lateral sediment redistribution is partly or even largely an artifact of insufficient age control in the EEP, while the second explanation, which assumes that the observed increase is real, involves enhanced deep sea tidal current flow during periods of low sea level stand.

Sylvan Township and Chelsea (Mich.) residences, ca. 1874

Left to right: Res. of Henry Warren, Sec. 33, Webster Tp. Mich.; Res. of Skidmore, Sec. 17, Lyndon Tp. Mich.; Res. of J.H. Collins, Sec. 4, Lyndon Tp. Mich.; Res. of Wm. A. Jones, Sec. 32, Dexter Tp. Mich.; Res. of Hanson Sesions, Sec.2, Northfield Tp. Mich.; Res. of A.E. Collins, Sec. 4, Lyndon Tp. Mich. Drawn and Compiled by Cyrus Wheelock. Publication information: Chicago, Ill. : Everts & Stewart, 1874.

Driving performance after an extended period of travel in an automated highway system.

Federal Highway Administration, Office of Safety and Traffic Operations, Washington, D.C.

An annotated bibliography on detached breakwaters and artificial headlands /

Includes indexes.

Chemical shoreline cleaning agents for oil spills : update state-of-the-art on mechanisms of action and factors influencing performance /

"EPA contract no. 68-C8-0062, Work assignment no. 3-48, SAIC project no. 01-0895-03-1000."

Biological availability of pollutants to marine organisms /

Contract IAG-D-40541.

Tri-level study: modification. Task 1: final report on potential benefits of various improvements in vehicle systems in preventing accidents or reducing their severity. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Tri-level study: modification. Task 3: validity assessment of police-reported accident data. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Truck, bus, and motorcycle safety status methodology: final report. Volume II: technical report.

National Highway Traffic Safety Administration, Washington, D.C.