28°S 142°E Tennappera – Queensland by Degrees

AT THE POINT

goog

Degree confluence 28°S 142°E Google Earth

n

Looking north

e

Looking east

s

Looking south

w

Looking west

Point information & photos: Col Grant. Late Afternoon Sept 2008. Authors email: cgrant@vnc.qld.edu.au

IN THE DEGREE SQUARE

Observations carried out at point 23.0 kms SE of degree confluence (unable to find access track).

Observation site at gibber field, within the catchment of Cooper Creek.

ground

Ground surface: gibber

gps

GPS Readout

Climate: The closest representative weather station is at the Tibooburra Post Office , which is 160 km south of the confluence, and has an elevation of 183m.

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Mean max
(ºC)

36.1

35.3

32.2

27.0

21.9

18.4

17.8

20.3

24.5

28.5

32.0

24.9

27.4

Mean min
(ºC)

22.0

21.7

18.6

13.9

9.4

6.4

5.4

6.8

10.2

14.1

17.5

20.3

13.9

Mean rain
(mm)

27.6

28.6

23.0

14.8

18.3

16.7

16.5

11.8

12.2

18.2

16.2

21.7

225.7

The highest temperature recorded was 47.6°C in January 1973, and the lowest was -2.5°C in June 1982. The greatest rainfall recorded in a year was 755.4 mm in 1974, and the lowest was 47.9 mm in 1919. These and other climate statistics for Tibooburra can be found at: Australian Bureau of Meteorology, http://www.bom.gov.au/climate/averages/tables/cw_046037_All.shtml

Extremes of Nature: Since 1906 there have been no cyclones to pass within 50 km of the degree confluence, but three have passed within 200 km (1956, 1976, 1995) despite the area's inland location. Cyclone information for this area and all of Australia can be found at the Australian Bureau of Meteorology website, http://www.bom.gov.au/cgi-bin/silo/cyclones.cgi.

cyc

Cyclone tracks within 200 km of the confluence, 1906 to 2006 (Bureau of Meteorology web site)

The area can experience extreme heat throughout some of the year, with Tibooburra having an average of 74 days annually with maximum temperatures equal to or over 35°C. With a low annual rainfall and only 32 days on average a year, the area is also among the driest in Australia.

Today:

The population of the degree square is less than 50

Cooper Creek Floodplain
This area can be located at the northern edge of the degree square. Cooper Creek runs south prior to turning west towards Innamincka (SA).
The Cooper's Floodplain is about 14 km wide at this location. It is made up of many flowing and non-flowing channels and areas subject to inundation in between. This is Queensland's Channel Country.

river

Cooper Creek Floodplain


Oil and Gas
Much of SW Qld and NE SA is underlain by sedimentary basins that hold natural gas and oil deposits. Exploration and mining are now important to the local and state economies. The Jackson Field is also located in this degree square. Underground pipelines are used to move oil large distances within the southwest of Qld.

oil

Noccowla Oil Plant

 

Edited by:  Hayley Freemantle

 

More to come.