Territory Stories

Assessment of the Jabiluka Project : report of the Supervising Scientist to the World Heritage Committee

Details:

Title

Assessment of the Jabiluka Project : report of the Supervising Scientist to the World Heritage Committee

Creator

Johnston, A.; Prendergast, J. B.; Bridgewater, Peter

Collection

E-Publications; E-Books; PublicationNT; Supervising Scientist Report; 138

Date

1999

Location

Alligator Rivers Region

Table of contents

Main report--Appendix 2 of the Main Report. Submission to the Mission of the World Heritage Committee by some Australian Scientists ... --Attachment A. Johnston A. and Needham S. 1999. Protection of the environment near the Ranger uranium mine--Attachment B. Bureau of Meteorology 1999. Hydrometeorological analysis relevant to Jabiluka--Attachment C. Jones, R.N., Hennessy, K.J. and Abbs, D.J. 1999. Climate change analysis relevant to Jabiluka--Attachment D. Chiew, F and Wang, Q.J. 1999. Hydrological anaysis relevant to surface water storage at Jabiluka--Attachment E. Kalf, F. and Dudgeon, C. 1999. Analysis of long term groundwater dispersal of contaminants from proposed Jabiluka mine tailings repositories--Appendix 2 of Attachment E. Simulation of leaching on non-reactive and radionuclide contaminants from proposed Jabiluka silo banks.

Language

English

Subject

Uranium mill tailings - Environmental aspects - Northern Territory - Alligator Rivers Region; Environmental impact analysis - Northern Territory - Jabiluka; Uranium mines and mining - Environmental aspects - Northern Territory - Jabiluka; Jabiluka - Environmental aspects

Publisher name

Environment Australia

Place of publication

Canberra (A.C.T.)

Series

Supervising Scientist Report; 138

Format

1 volume (various pagings) : illustrations, maps

File type

application/pdf

ISBN

642243417

Use

Copyright

Copyright owner

Environment Australia

License

https://www.legislation.gov.au/Details/C2019C00042

Parent handle

https://hdl.handle.net/10070/264982

Citation address

https://hdl.handle.net/10070/462402

Related items

https://hdl.handle.net/10070/462403; https://hdl.handle.net/10070/462400; https://hdl.handle.net/10070/462405; https://hdl.handle.net/10070/462406; https://hdl.handle.net/10070/462408; https://hdl.handle.net/10070/462409; https://hdl.handle.net/10070/462411

Page content

28 Figure 3.3.2 Relationship between evaporation and rainfall at Jabiru for the months of January, February and March There is, however, evidence that even this small effect is an over-estimate because, during the principal months of the Wet season (December to March), cloud cover is often extensive even when there is no rainfall. As a result, the relationship between evaporation and rainfall during any given month will not be linear but evaporation will tend towards a constant lower value at higher rainfall values. This effect is clearly illustrated in figure 3.3.2 where evaporation at Jabiru is plotted against rainfall for the principal Wet season months of January, February and March. The line through the data in each case is of the form bRaeEE += 0 where a and b are constants. For January and March, evaporation is essentially constant for values of rainfall above the average for the month while for February a decrease (about 6%) in evaporation is observed between the average rainfall and the maximum in the record. Hence the assumption of a linear relationship between evaporation and rainfall will result in an underestimate of the evaporation in very wet years. The inverse relationship between evaporation and rainfall could, however, have greater significance in drought years because the use of long-term average monthly values for evaporation will lead to a significant underestimate of evaporation in those years. This may lead to the need to import water from the bore field to maintain plant operation. For this January E va po ra tio n (m m ) 50 100 150 200 250 February E va po ra tio n (m m ) 50 100 150 200 250 March Rainfall (mm) 0 100 200 300 400 500 600 700 800 900 E va po ra tio n (m m ) 50 100 150 200 250


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