Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Cycling of organic and inorganic sulphur in a chestnut oak forest (1982)
    Springer
    Oecologia 54 (1982), S. 141-148 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Sulfur (S) cycling in a chestnut oak forest on Walker Branch Watershed, Tennessee, was dominated by geochemical processes involving sulfate. Even though available SO 4 2- was present far in excess of forest nutritional requirements, the ecosystem as a whole accumulated ∼60% of incoming SO4−S. Most (90%) of this accumulation occurred by SO 4 2- adsorption in sesquioxide-rich subsurface soils, with a relatively minor amount accumulating and cycling as SO 4 2- within vegetative components. Organic sulfates are thought to constitute a large proportion of total S in surface soils, also, and to provide a pool of readily mineralized available S within the ecosystem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00378385
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A 35-year history of 90Sr releases from a radioactive-waste burial ground (2000)
    Springer
    Environmental geology 39 (2000), S. 1275-1285 
    Details
    ISSN: 1432-0495
    Keywords: Key words Radioactive ; Remedial action ; Radiostrontium ; Burial ground ; Source control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  Data from a radioactive waste disposal area at Oak Ridge National Laboratory suggest that releases depend on site hydrology and waste containment. Loss of packaging integrity has apparently caused episodic increases in 90Sr source strength, followed by gradual reduction as runoff carries contaminants away. Most flow and transport occurs during January–April storms in response to site hydrology. Diversion of runoff from undisturbed areas upstream of the waste site (1983) reduced flow through the site by more than 65% and annual 90Sr release by more than 45%. However, between 1983 and 1994, increases in 90Sr source strength have partially offset the diversion effectiveness. Selective source control in 1996 further reduced annual 90Sr releases by more than 30% in the first two years, compared with pre-treatment conditions. The effectiveness of the grouting treatment should increase over the next 5–10 years, if new 90Sr sources are insignificant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002549900087
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Hydrologic factors and90Sr transport: A case study (1982)
    Springer
    Environmental geology 4 (1982), S. 53-63 
    Details
    ISSN: 1432-0495
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Lack of runoff control is probably the most important potential source of problems in the operation of solid, low-level radioactive waste disposal areas. Solid waste disposal area (SWDA) 4 at Oak Ridge National Laboratory is an example of the combined effects of hydrologic factors and burial ground operations on radionuclide transport. Results from a study of90Sr transport at SWDA 4 show that both surface water and groundwater flows are important runoff control considerations and may vary in relative importance over an extended period of time. For the area studied, it is currently estimated that at least 80% of the90Sr transport is directly related to surface runoff. Therefore, it is concluded that the key to remedial action at SWDA 4 is to control surface runoff.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02380499
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...