Showing posts with label Rivers. Show all posts
Showing posts with label Rivers. Show all posts

Friday, June 18, 2021

Most rivers in the world run dry -- now and then

Science Daily

It's not uncommon for the Oak River, which flows through southwestern
Manitoba, CA., to stop flowing at this control dam. A PinP photo.

A new study found that between 51-60% of the 64 million kilometres of rivers and streams on Earth that they investigated stop flowing periodically, or run dry for part of the year. It is the first-ever empirically grounded effort to quantify the global distribution of non-perennial rivers and streams. The research, which was published today in Nature, calls for a paradigm shift in river science and management. Story here/

Monday, November 9, 2020

Rivers melt Arctic ice, warming air and ocean.

 SCIENCEDaily
An Arctic river in Alaska. Photo by mypubliclands 

A new study shows that increased heat from Arctic rivers is melting sea ice in the Arctic Ocean and warming the atmosphere. Details here.

Sunday, October 27, 2019

Glacial rivers absorb carbon faster than rainforests, scientists find


The Guardian
Ellesmere Island, northern Canada. Satellite photo by NASA.
‘Total surprise’ discovery overturns conventional understanding of rivers. Story here.

Wednesday, May 15, 2019

Two-thirds of world's longest rivers throttled by mankind: study

PHYS ORG
The design of the "site c" dam in B.C.

Almost two in three of Earth's longest rivers have been severed by dams, reservoirs or other manmade constructions, severely damaging some of the most important ecosystems on the planet, researchers said Wednesday. Story here.

The Arctic may be sea-ice-free in summer by the 2030s

  Nature Communications                                                 Photo by Patrick Kelley   The Arctic could be sea-ice-free during th...