You are browsing the archive for groundwater systems Archives - Page 4 of 4 - Water Underground.
February 4, 2016
Nature Geoscience digging into water underground this month!
Nature Geoscience is digging hard into water underground – the February issue is part of a special focus on groundwater. The cover this month is a gorgeous (groundwater-filled?) waterfall by Glen Jasechko, Scott’s brother. The groundwater focus includes: commentary on drought in the Anthropocene, led by Anne van Loon news and views pieces by Ying Fan and Tamara Goldin our paper on the volume and distribution of modern groundwater a …
January 26, 2016
Water Canada article on our research
Scott Jasechko and I wrote an article for Water Canada about our research on modern groundwater published last fall in Nature Geoscience. We tried desperately to use plain language… how did we do? See WaterCanadaWinter2016
September 3, 2015
How easily does our understanding of ‘CRUSTAL PERMEABILITY’ flow ? A new Geofluids special edition…
Permeability is a crazy parameter: heterogeneous on many spatial scales, highly variable over up to 20 orders of magnitude, and transient on many temporal scales. Yet, for better or for worse it is essential to our understanding of numerous earth processes, as well as how human impact and interact with the earth. I have had the honor of guest editing a special issue of Geofluids called ‘Crustal Permeability” with Steve …
July 19, 2015
When it snows, it pours (into aquifers)! Recharge seasonality around the world…
Written by Scott Jasechko University of Calgary isohydro.ca twitter.com/sjasechko Groundwater is renewed by rain and melted snow that moves under the ground, a process called groundwater recharge. The percentages of summer versus winter precipitation that make it under the ground are expected to be different for a number of reasons including larger plant water use during the summer, and larger areas of frozen ground during the winter. Our recent research …
July 13, 2015
Is research on ‘regional groundwater flow’ stagnant or still flowing?
Written by Brian Smerdon IAH regional groundwater flow commission In the early 1960’s József Tóth published seminal work on the concept of regional scale flow and nested flow systems. His work built on the “theory of groundwater motion” by M.K. Hubbard, and seemed to come along just at the right moment in history of hydrogeology. Armed with József Tóth’s work, the hydrogeologic community (geologist and engineers) began to see a …
February 13, 2015
The Groundwater Wetlands and Bogs Study Group
The Groundwater Wetlands and Blogs Study Group is an unfunded, voluntary collaboration of professionals, formed in December 2012, focused on groundwater wetlands, bogs, and related systems. The Study Group has about 250 members in 39 countries. Study Group members communicate primarily through a disciplined Yahoo Group listserve. We are not a social network nor are we an environmental advocacy group. The listserve is used primarily to exchange scientific and technical …
February 6, 2015
Are we in the age of postmodern groundwater?
My humanities colleagues and friends are always talking about postmodernism or pomo for short (see this funny satire). I’ve been thinking a lot lately about ‘modern groundwater’ (stay tuned for a cool paper), so I started wondering if there is ‘postmodern groundwater’. Modern groundwater is groundwater recharged since the huge spike it tritium in the early 1960’s due to above ground thermonuclear testing. But tritium has a short half-life, so …
September 22, 2014
Is groundwater depletion keeping California fruit and veggies cheap during the severe drought?
Food prices in the United States are increasing slightly but not as significantly as one might expect given the severe drought in California. Margret Munro, a science journalist with Postmedia, recently asked me a great question: is groundwater depletion keeping California fruit and veggies cheap during the severe drought? Following up on her article, here is what I found and what it means for the Central Valley aquifer system in …
June 3, 2014
One in four of world’s big cities water-stressed
From the McGill Newsroom As more people move to urban areas, cities around the world are experiencing increased water stress and looking for additional water supplies to support their continued grow. The first global database of urban water sources and stress, published online this week in Global Environmental Change, estimates that cities move 504 billion litres of water a distance of 27,000 kilometers every day. Laid end to end, all …
May 30, 2014
Groundwater extraction can move mountains
Contributed by Pascal Audet (webpage or email) Next time you eat food grown in the San Joaquin Valley of California, think about this: the water used for growing them probably came from under ground. Farmers do not really have a choice because the amount of water from rain and snow can’t keep up with the needs for growing food. Every year more water is drawn out of the ground for …
