Towards the Unification of the Vertical Datum Over the North American Continent

2012 ◽  
pp. 253-258 ◽  
Author(s):  
D. A. Smith ◽  
M. Véronneau ◽  
D. R. Roman ◽  
J. Huang ◽  
Y. M. Wang ◽  
...  
Keyword(s):  
North American ◽  
American Continent ◽  
North American Continent ◽  
The North ◽  
Vertical Datum

Coccidioidomycosis: Centennial year on the North American continent

1994 ◽  
Vol 16 (18) ◽  
pp. 137-144 ◽  
Author(s):  
Michael A. Saubolle ◽  
Joseph Sutton
Keyword(s):  
North American ◽  
American Continent ◽  
North American Continent ◽  
The North

Francisco de Miranda in Russia

1950 ◽  
Vol 6 (04) ◽  
pp. 431-449 ◽  
Author(s):  
Joseph O. Baylen ◽  
Dorothy Woodward
Keyword(s):  
North American ◽  
American Continent ◽  
Grand Tour ◽  
North American Continent ◽  
The North ◽  
Austrian Minister

On September 26, 1786, Don Francisco de Miranda, adventurer and patriot, secured a passport from the Austrian Minister in Constantinople which enabled him to continue his “grand tour” to Russia. The nature of Miranda’s subsequent visit, and the extent to which his reception at the court of Catherine II influenced Spanish and Russian policy, assumes significance in the light of events on the North American continent immediately preceding and during his stay in Russia.

The genus Crepidotus in Hawaii

1973 ◽  
Vol 51 (6) ◽  
pp. 1251-1254 ◽  
Author(s):  
Robert Ueki ◽  
Clifford W. Smith
Keyword(s):  
New Species ◽  
North American ◽  
American Continent ◽  
North American Continent ◽  
The North ◽  
One New Species

Ten species of the genus Crepidotus are described from Hawaii. They are Crepidotus alabamensis, C. amygdalosporus, C. appalachianensis, C. applanatus var. globigera, C. avellaneus, C. citrinus, C. mollis, C. nephrodes, and C. rhizomorphus. One new species, C. bakerae, is proposed. Keys and distinctive characters of each species are provided. It is suggested that most of the species came from the North American continent.

The Vinland Adventure: A North Atlantic Perspective

1982 ◽  
Vol 2 (4) ◽  
pp. 285-308 ◽  
Author(s):  
Thomas H. Mc Govern
Keyword(s):  
Native Americans ◽  
North Atlantic ◽  
North American ◽  
American Continent ◽  
North American Continent ◽  
The North ◽  
Geographical Factors ◽  
The North Atlantic ◽  
Adaptive Shifts ◽  
Early Phases

During the Viking period, Norse seafarers from Greenland attempted to plant a settlement on the North American continent. This Vinland settlement faltered in its early phases and was not successful. Its failure may be best understood from the broader perspective of the Scandinavian expansion across the North Atlantic islands which began ca. AD 800. Adaptive shifts in the older North Atlantic colonies, geographical factors, and the resistance of Native Americans may have combined to doom this Western-most medieval colony.

scholarly journals A new research for the secular polar motion in this century

1988 ◽  
Vol 128 ◽  
pp. 385-392 ◽  
Author(s):  
Zhao Ming ◽  
Dong Danan
Keyword(s):  
North American ◽  
Polar Motion ◽  
Plate Motion ◽  
List Type ◽  
American Continent ◽  
Local Motion ◽  
New Techniques ◽  
North American Continent ◽  
The North ◽  
New Research

A new research for the secular drift of the Earth's pole was made based on nine long sequences of latitude observations and led to the following conclusions. 1.During this century, the Earth's pole has been moving with a mean rate of about 0″.0016/yr along the meridian about 70° (W). This drift rate is much less than the 0″.0035/yr derived from the ILS sequence.2.Relative to the North American continent, the Ukiah station located on the west coast of the U.S. shows a local drift of about 6 cm/yr northward, which coincides well with that determined by new techniques.3.Referring to the Europe-Asia plate, the whole North American continent shows a drift northward with a rate of about 8 cm/yr. The Mediterranian shows a similar drift of about 6 cm/yr. Perhaps these drifts are the consequences of plate motion and/or deflection of local vertical. It is useful for ascertaining the sources of the drifts to intercompare longer sequences observed with different techniques, including classical and new ones.4.Three of five ILS stations, Ukiah, Gaithersburg, and Carloforte, show significant local drifts. Therefore, the Conventional International Origin (CIO), which is defined by the 1903.0 mean latitudes of five ILS stations, is far from fixed on the Earth's surface. It is necessary to re-define an origin of the pole of the Conventional Terrestrial System (CTS).5.The quasi-30-year libration showed by the ILS data is not the real pattern of the Earth's polar motion, but results from both the irregular polar motion over some period and the local motion of Ukiah.

Sign in / Sign up

Export Citation Format

Share Document