Navigation Links
Glaciers contribute significant iron to North Atlantic Ocean
Date:3/11/2013

tions to the Greenland ice sheet in May and July 2008, Bhatia and her colleagues collected samples from sites at several land-terminating glaciers on the western side of the Greenland ice sheet. The glaciers' meltwater empties into a large lake, which eventually drains into an estuary system before reaching the open ocean. Their study reports levels of dissolved iron orders of magnitude higher than previously found for Greenland glacial runoff rivers. When the WHOI team extrapolated their findings to calculate the contribution of iron from the entire ice sheet, they estimated its value to be within the range of that from dust deposition in the North Atlantic, which is believed to be the primary source of bioavailable iron to this ocean. This value is only an order of magnitude lower than the estimated annual contribution of iron from rivers worldwide.

When an ice sheet or glacier melts, most of the water doesn't simply run off the surface of the ice sheet. Instead it first drains to the bedrock below the ice sheet through cracks and conduits called moulins and then exits in large runoff rivers.

"A lot of people think of a glacier and an ice sheet as a big block of ice," says Bhatia, "but it's actually quite a porous, complicated system underneath a glacier, with lots of moulins and crevasses leading to the bottom. Once you get into the bottom, there are large tunnels that these waters are passing through." The more time the water spends in contact with the bedrock and sediments beneath the glacier, the more nutrients it picks up, including iron.

The WHOI team says further research is needed to determine how much of this iron actually reaches the open ocean, as their study followed the meltwater from the edge of the glaciers to the large lake they empty into. For this study, the team assumed that the amount of iron filtered out as the water moves through estuaries before reaching the marine environment would be roughly the same for glacial
'/>"/>

Contact: WHOI Media Relations
media@whoi.edu
508-289-3340
Woods Hole Oceanographic Institution
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Stress contributes to cognitive declines in women with breast cancer, researcher says
2. Mild traumatic brain injury may contribute to brain network dysfunction
3. Social-class discrimination contributes to poorer health
4. RLIP76 contributes to pancreatic cancer cell resistance to chemotherapy and radiation
5. New study finds low rates of biopsy contribute to celiac disease underdiagnosis in US
6. Researchers find abuse during childhood may contribute to obesity in adulthood
7. The Ben & Catherine Ivy Foundation contributes $10 million to TGen for brain cancer research
8. Substantial road traffic noise in urban areas contributes to sleep disturbance and annoyance
9. Job stress and mental health problems contribute to higher rates of physician suicide
10. Changes in nerve cells may contribute to the development of mental illness
11. RISD Sophomore Contributes Illustrations to Doctor Engelland's book on Concussions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/25/2014)... (PRWEB) October 25, 2014 Homeowners that ... has ‘gone bad’ need wonder no more. Clean Crawls ... homeowners should watch out for when it comes to ... according to the article released by Clean Crawls, can ... homeowners that any insulation that has deteriorated, become damp, ...
(Date:10/25/2014)... (PRWEB) October 25, 2014 Limbkeepers® announced ... episode of Innovations with Ed Begley Jr, airing 1st ... TBA. , In this episode, Innovations will focus on ... to protect fragile, thinning skin on arms, hands, and ... learn about these versatile products, which help reduce injuries, ...
(Date:10/25/2014)... Not getting the right amount of sleep might raise ... Those who sleep less or more than the ... more prone to developing the chronic condition, which causes ... concluded that duration and quality of sleep are key ... diseases. "Both short and long durations of sleep ...
(Date:10/25/2014)... 2014 (HealthDay News) -- Current osteoporosis screening guidelines ... women at risk for osteoporosis-related fractures, a new ... fractures, we need tools that help us accurately ... that we can target these at-risk people for ... of medicine in the division of general internal ...
(Date:10/22/2014)... At a time when the national concussion conversation ... all levels, the UPMC Sports Medicine Concussion Program ... two powerful messages are lost: Concussions can be treated, ... recoveries every day. , In striving to shift the ... UPMC and the Concussion Program are unveiling the online ...
Breaking Medicine News(10 mins):Health News:5 Signs Indicating That Insulation Needs Replacing as Told By Clean Crawls in Recent Article 2Health News:Upcoming Episode of Innovations with Ed Begley, Jr. to Feature Limbkeepers® 2Health News:Sleep Duration Linked to Ulcerative Colitis Risk in Study 2Health News:Osteoporosis Screening Guidelines May Miss Younger Women at Risk 2Health News:University of Pittsburgh Medical Center Launches Initiative to Emphasize Concussions Are Treatable 2Health News:University of Pittsburgh Medical Center Launches Initiative to Emphasize Concussions Are Treatable 3Health News:University of Pittsburgh Medical Center Launches Initiative to Emphasize Concussions Are Treatable 4
... Hillenbrand, Inc.,(NYSE: HI ) will announce its fourth-quarter ... The full text of the release and,financials will be ... The company will hold a conference call and ... 8 a.m. ET. The webcast is,available through the Investor ...
... Initial Physician Experience with Eculizumab in Patients ... Presented, CHESHIRE, Conn., Nov. 10 ... announced that the American,Society of Hematology (ASH) ... as a treatment for patients with paroxysmal,nocturnal ...
... CINCINNATI Researchers have generated the first comprehensive ... light on the genetic and molecular dynamics of ... sponsored by the National Institute of Diabetes and ... led by Cincinnati Children,s Hospital Medical Center reports ...
... family caregivers of Alzheimer,s disease patients succumb to the ... become hospital patients themselves, according to an Indiana University ... Journal of General Internal Medicine . , ... Regenstrief Institute and the Indiana University Center for Aging ...
... French . , Dr. Ronald Melzack ... and treatment of pain from the 1960s onward, has ... He and his four fellow 2009 inductees from across ... "brought distinction to Canada through their outstanding contributions to ...
... 10 The role of the nurse,practitioner (NP) ... across the,country celebrate more than four decades of ... distinguished group of healthcare,providers number approximately 125,000 strong ... Events held in communities around the country ...
Cached Medicine News:Health News:Researchers to Present Additional Data on Soliris(R) (eculizumab) for the Treatment of PNH at the ASH Annual Meeting 2Health News:Researchers to Present Additional Data on Soliris(R) (eculizumab) for the Treatment of PNH at the ASH Annual Meeting 3Health News:Researchers to Present Additional Data on Soliris(R) (eculizumab) for the Treatment of PNH at the ASH Annual Meeting 4Health News:Genetic blueprint revealed for kidney design and formation 2Health News:Genetic blueprint revealed for kidney design and formation 3Health News:Caring for the caregiver: Redefining the definition of patient 2Health News:Trailblazing pain pioneer Ronald Melzack to be inducted into Medical Hall of Fame 2Health News:Celebrate 'Your Partner in Health - The Nurse Practitioner' 2
(Date:10/25/2014)... Oct. 24, 2014 Research and Markets ... Market Current Trends, Opportunities - Global Forecast to 2019" ... this report, the global dental equipment market is categorized ... systems and equipment market is expected to register the ... the forecast period (2014 to 2019). This high growth ...
(Date:10/25/2014)... Oct. 24, 2014  America,s future engineers will ... competition at the  Medical Design and Manufacturing (MD&M) ... th at the Minneapolis ... student built robots from the "For Inspiration and ... students and mentors will offer information to those ...
(Date:10/25/2014)... Research and Markets ( ... "Global and Chinese Hemodialysis Concentrates Industry Report ...      (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , Global and ... professional and in-depth study on the current state ... on the Chinese situation. The report ...
Breaking Medicine Technology:Dental Equipment Market Current Trends, Opportunities - Global Forecast to 2019 2Dental Equipment Market Current Trends, Opportunities - Global Forecast to 2019 3Local robotics teams compete - a "FIRST" at next week's MD&M Minneapolis- October 29-30th at the Minneapolis Convention Center 2Local robotics teams compete - a "FIRST" at next week's MD&M Minneapolis- October 29-30th at the Minneapolis Convention Center 3Global and Chinese Hemodialysis Concentrates Industry Report 2014 2Global and Chinese Hemodialysis Concentrates Industry Report 2014 3
... 29, 2011 Leading event organiser UBM has ... portfolio of annual pharmaceutical events including CPhI Worldwide ... services, P-MEC Europe for equipment, machinery and technology ... Hosted at Messe Frankfurt, Germany from the 25th ...
...  Henry Schein, Inc. (Nasdaq: HSIC ), ... services to office-based practitioners, today announced the launch ... an integrated wellness and education program that informs ... and total health, and assists dental professionals in ...
Cached Medicine Technology:Record Year for UBM's Pharma Events in Frankfurt 2Record Year for UBM's Pharma Events in Frankfurt 3Record Year for UBM's Pharma Events in Frankfurt 4Henry Schein Dental Launches Total Health™ Beyond the Mouth 2Henry Schein Dental Launches Total Health™ Beyond the Mouth 3
FLEXILOG spare part....
Complete calibration kits are available for both pH and manometry systems....
Flexilog custom medical carts are configured to suite the requirements of FLEXILOG motility system users. With locking wheels and storage drawers, our carts are suitable for any care provider in any ...
... kit for convenient pH catheter calibration., ,pH ... any procedure. The Alpine Calibration kit contains ... water for your convenience. Simply cut the ... catheters to soak. No measuring or pouring! ...
Medicine Products: