搜索结果: 1-15 共查到“国际动态 Migration”相关记录15条 . 查询时间(0.015 秒)
Warm oceans helped first human migration from Asia to North America（图）
Warm oceans first human migration Asia to North America
2020/12/31
New research reveals significant changes in the circulation of the North Pacific Ocean and their impact on the initial migration of humans from Asia to North America.The U.S. National Science Fou...
For rufous hummingbirds, migration routes may differ（图）
rufous hummingbirds migration routes
2020/7/31
Plucky, beautiful, and declining in numbers at about 2% annually, rufous hummingbirds make their long annual migrations in different timing and route patterns based on age and sex, new U.S. Natio...
Driven by Earth's orbit, climate changes in Africa may have aided human migration（图）
Driven by Earth's orbit climate changes Africa may aided human migration
2020/2/20
In 1961, John Kutzbach, then a recent college graduate, was stationed in France as an aviation weather forecaster for the U.S. Air Force. There, he found himself exploring the storied caves of Dordogn...
New insights into genetic basis of bird migration（图）
New insights genetic basis bird migration
2019/10/18
A gene associated with the migratory patterns of golden-winged and blue-winged warblers could lend insight into the longstanding question of how birds migrate across long distances.A new study led by ...
Barrier-island migration drives large-scale marsh loss（图）
Barrier-island migration drives large-scale marsh loss
2017/2/16
If you’ve visited the Outer Banks or other barrier islands, you’ve likely experienced their split personalities—places where high waves can pound the sandy ocean shore while herons stalk placid saltma...
Arctic sea ice loss impacts beluga whale migration
Arctic sea ice loss beluga whale migration
2017/2/15
The annual migration of some beluga whales in Alaska is altered by sea ice changes in the Arctic, while other belugas do not appear to be affected.A new study led by the University of Washin...
Seasonality of bird migration responds to environmental cues,scientists show
Seasonality bird migration environmental cues scientists
2016/9/12
The seasonality of bird migration is shifting in response to climate change. As a result, birds in the United States are arriving at their northern breeding grounds earlier in spring -- and may be dep...
Scientists track nighttime bird migration using weather radar
Scientists nighttime bird migration weather radar
2016/2/23
Using recently developed techniques for analyzing Doppler weather radar data, researchers looked at the impediments -- crosswinds and oceans -- facing nighttime-migrating birds in eastern North Americ...
Ocean Heat Content Reveals Secrets of Fish Migration Behaviors
research ocean heat migration
2015/11/12
Researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science developed a new method to estimate fish movements using ocean heat content images, a dataset commonly us...
OU Students Use Nation’s Weather Radar Network to Track Bird Migration at Night
OU Students Nation’s Weather Radar Network Track Bird Migration at Night
2015/7/13
Using the nation’s weather radar network, two University of Oklahoma doctoral students have developed a technique for forecasting something other than the weather: the orientation behavior of birds as...
Long-term study on ticks reveals shifting migration patterns, disease risks
ticks shifting migration patterns disease risks
2015/5/25
Over nearly 15 years spent studying ticks, Indiana University's Keith Clay has found southern Indiana to be an oasis free from Lyme disease, the condition most associated with these arachnids that are...
Family-Related Issues Top List of Reasons for Migration of Immigrant Scientists and Engineers to the U.S.(图)
Immigrant
2007/7/5
June 28, 2007,The latest statistics from the National Science Foundation (NSF) reveal that more than one-third of immigrant scientists and engineers report that the most important reason they came to ...
Moved by the State – the reality of modern day human migration in the northern Polar Regions
human migration demography anthropology
2007/4/10
4. April 2007,Seasonal nomadism, migration, and resettlement have always been important for the people living in the northern Polar Regions as these movements are key for their survival. In the past, ...
Arizona State University-Guanajuato pact assesses migration issues
migration education system
2007/3/5
March 2, 2007，For more than 100 years, the state of Guanajuato in the central highlands of Mexico has been a major point of departure for migrants. It continues to account for a disproportionately lar...
U.S. Filmmaker Marston Talks about Migration in Viet Nam（图）
Filmmaker Migration “Maria Full of Grace”
2007/1/30
12 January 2007，HANOI, Viet Nam — Swallowed cocaine pellets in Colombia and exploding trucks in Iraq may seem a world away from the struggles of rural migrants in Viet Nam, but internationally-acclaim...