Planktonic foraminiferal d18O values and apparent calcification depths of core-top samples along an east-west transect across the tropical Atlantic/Caribbean

D18O values of nine tropical-subtropical planktonic foraminiferal species with different preferential habitat depths collected from 62 core-top samples along an east-west transect across the tropical Atlantic/Caribbean were used to test the applicability of interspecific d18O gradients for reconstructions of tropical upper ocean stratification. In general, the d18O difference (Delta d18O) between intermediate- and shallow-dwelling species decreases, and Delta d18O between deep and intermediate dwellers increases with increasing thermocline depth towards the west. The statistical significance of regional differences in Delta d18O highlights Delta d18O between the intermediate dwellers (in particular Globorotalia scitula and Globorotalia tumida) and the shallow dweller Globigerinoides ruber pink, as well as Delta d18O between the deep dwellers Globorotalia crassaformis or Globorotalia truncatulinoides dextral and intermediate dwellers as most sensitive to changes in tropical Atlantic thermocline depth. Based on the observed regional variations in interspecific Delta d18O, we propose a multispecies stratification index "STRAtrop" = (d18Ointermediate - d18Oshallow) / (d18Odeep - d18Oshallow) for the tropical ocean. Statistically significant differences in STRAtrop values between the E-Atlantic and the Caribbean suggest that this index may be a useful tool to monitor variations in tropical upper ocean stratification in the geological record.

Evaluating the Effectiveness of GMS Economic Corridors: Why is There More Focus on the Bangkok-Hanoi Road than the East-West Corridor?

Since the inauguration of the Greater Mekong Sub-region (GMS) Economic Cooperation Program in 1992, road infrastructure projects have played a very important role. Their economic significance, especially, has become a focal point after the introduction of the concept of the three economic corridors in 1998: the East-West Economic Corridor; the North-South Economic Corridor; and the Southern Economic Corridor (Figure 1). The completion of the Second International Mekong Bridge between Mukdahan, Thailand and Savannakhet, Laos was an epoch-making event in the development of the East-West Economic Corridor. The business community, however, has paid more attention to the Bangkok-Hanoi Road than the East-West Economic Corridor. This study examines the reasons why the former has received more focus than the latter, by using criteria such as population density and the economic scale at a provincial or state level. Thereafter, the effectiveness of other economic corridors is examined, by applying the same criteria.

Transatlantic cooperation and perspectives on East-West relations, Copenhagen, 1980 : report of the seventeenth meeting of members of Congress and of the European Parliament, November 13-14, 1980, pursuant to H. Res. 98 ....

Item 1017-A, 1017-B (microfiche)

The Chinese economy and foreign trade perspective.

Mode of access: Internet.

Carlisle joint station, and approaches from north, south, east, & west, including Saint Nicholas level crossing and Crown street junction : instructions to signalmen, drivers, guards, breaksmen, & others.

Mode of access: Internet.

Stray leaves from my sketch books : a few jottings with pencil, in my rambles over land and sea, east, west, north and south : reproduced by photo engraving /

Cover title: Reminiscences of travel.

Tracts on political economy : viz. 1. Britain independent of commerce; 2. Agriculture the source of wealth; 3. The objections against the corn bill refuted; 4. Speech on the East India trade ; with prefatory remarks on the causes and cure of our present distresses, as originating from neglect of principles laid down in these works /

The tracts collected under the above title have individual title-pages. No. 1, 7th ed., 1808; no. 2, 1808; no. 3, 5th ed., 1815; no. 4, speech delivered 1812, no imprint date.