This can be balanced by a geostrophic flow within the surface layer associated with surface pressure gradients (as shown) in which eastward pressure forces drive northward flow over ridges, where the layer is thin, and westward pressure forces drive southward flows over abyssal plains, where the ...
Westward expansion of agricultural settlement in the eastern United States in the 18th and 19th centuries was driven by the need to constantly find new, uncultivated soils (Stoll, 2002). Although important discoveries of the role of soil properties and management in crop production had already been...
associated with a brief intensification of westward currents and a fall in sea level, but then westerly winds appeared in the east and generated an eastward equatorial oceanic jet there. InFigs. 2.14and2.15this is seen to happen in late April 1983 at 95°W. The second peak in sea level ...
Recent evidence suggests that intertidal invertebrates on the southern African coast can undergo major distributional changes associated withclimate change.Muteveri et al. (2015)have shown that phylogeographic patterns determined for the smooth plough shellBullia rhodostomaindicate a major westward range expa...
They also concluded that African and European matsutake mushrooms are the most recent descendants from a westward expansion from North America. In Europe, Murat et al. (2004) studied the post-glacial recolonisation routes of T. melanosporum from Northern Italy to Northern France and Northern ...
With the advent of weak stratification in the spring (associated with a warming water column), photosynthesis begins in the plant communities. However, because the micrograzers can apparently crop the phytoplankton very efficiently, little or no accumulation of plant biomass occurs, and it is the ...
The dead are laid extended supine, with predominantly westward and eastward orientation. The mounds are low. All the burials known for this period are male, with warrior sets (Fig. 3: 1). Sign in to download full-size image Fig. 3. The Steppe zone of the Northern Black Sea region in ...
Phase 2–Amratian or Naqada I period(c.3900–3500BC). Small towns, perhaps centers for craft activities, involved in regional exchange, were located along the edge of the floodplain and on the levees. These towns were usually associated with cemeteries that began to exhibit signs of social ...
Models involving westward acceleration of South America from 20 to 30 m ka− 1 over the past 30 Ma, coupled with increased friction with the subducting Nazca plate, produce > 300 km of tectonic shortening in the Central Andes, with massive Altiplano uplift over the past 10 Ma. Thinner ...
Zone 2 is associated with shallow-focus events unaccompanied by volcanic activity. The San Andreas Fault is a good example, as is the Anatolian Fault in Northern Turkey. In these faults, two mature plates scrape by one another. The friction between them can be so great as to cause very ...