Monthly Archives: April 2011

River Stages:Middle Course of the River – Meanders & Ox-bow Lakes

In this stage the river channel has become much wider and deeper as the channel has been eroded and the river has been fed by many tributaries upstream. Consequently, despite the more gentle gradient the velocity of flow may be … Continue reading

Posted in Landforms, Rivers, water | 10 Comments

Gravitational Tug of War Warps Spiral Shape of Galaxy

The galaxies pairing in a new image, captured by the MPG/ESO 2.2-meter telescope in Chile, display some curious features, demonstrating that each member of the duo is close enough to feel the distorting gravitational influence of the other. The gravitational … Continue reading

Posted in Space | Leave a comment

Melting Ice on Arctic Islands a Major Player in Sea Level Rise

Melting glaciers and ice caps on Canadian Arctic islands play a much greater role in sea level rise than scientists previously thought, according to a new study led by a University of Michigan researcher. The United Nations projects that the … Continue reading

Posted in climate change, Glaciers | Leave a comment

Big Changes in Atmosphere of Mars

NASA’s Mars Reconnaissance Orbiter has discovered the total amount of atmosphere on Mars changes dramatically as the tilt of the planet’s axis varies. This process can affect the stability of liquid water, if it exists on the Martian surface, and … Continue reading

Posted in Space | Leave a comment