b'Geophysics in the surveysNewsMinView. Final results are expected to bedownloaded through the MinViewSouth Wales, Department of Regional released in 2022. portal. Users can also view andNSW, Maitland, accessed 20 June 2021.download the following geophysicalEgbert G.D. and Kelbert A. (2012) All NSW geophysical data nowproducts: statewide grids of magneticComputational recipes for data; radiometric and gravity data;electromagnetic inverse problems, available in MinView conductivity cross-sections fromGeophysical Journal International, After two years of meticulous work, allairborne electromagnetic (AEM)https://doi.org/10.1111/j.1365-airborne, ground (including seismic)surveys; and resistivity depth slices246X.2011.05347.x.and remotely sensed geophysics datafrom the AusLAMP MT survey. RockKirkby A.L., Musgrave R., Czarnota K., held by the NSW Government has beenproperties measured from samplesDoublier M., Kyi D., Duan J., Cayley quality-checked/quality-controlled,taken throughout NSW, includingR. and Kyi, D., 2020. Lithospheric metadata harvested and archived withinmagnetic susceptibility, densityarchitecture of a Phanerozoic orogen a data repository. Going forward, all newand (where applicable) remanentfrom magnetotellurics: AusLAMP geophysical survey data acquired bymagnetisation, will be available throughin the Tasmanides, southeast the NSW Government or submitted byMinView before the AEGC conference. Australia, Tectonophysics, https://doi.companies will be catalogued and addedorg/10.1016/j.tecto.2020.228560.to the repository. References Spampinato G.P.T., 2019. Statewide depth to basement 3D model update, Most of these surveys are displayedColquhoun G.P., Hughes K.S., DeyssingGeological Survey of New South Wales in MinView layers, where they canL., Ballard J.C., Folkes C.B., Phillips G.,Report GS2019/0563.be discovered using text and spatialTroedson A.L. and Fitzherbert J.A., searches. Data from government2021. New South Wales SeamlessNed Stolz surveys and non-confidentialGeology geodatabase, version 2.1Geological Survey of New South Wales company surveys can be immediately[data set]. Geological Survey of Newned.stolz@planning.nsw.gov.auHenderson byte: Anders CelsiusWe can add Anders Celsius to the list of scientists whose names are used as SI units, Anders Celsius (1701 - 44) was a Swedish astronomer, physicist and mathematician. He gave his name to the SI quantity of temperature with a unit of degree Celsius. This is appropriate as he proposed, in 1742, a temperature scale that is considered to be more useful than that of Daniel Gabriel Fahrenheit. It had a range of 100 degrees and, strangely, he assigned the value of zero to the boiling point of water and a value of 100 to the freezing point of water. Originally called the Centigrade scale, it was later renamed the Celsius scale in his honour. In 1745, a year after Celsius death, the scale was reversed to its current usage by Carl Linnaeus (who was then known for formalising the modern system of naming organisms).It is interesting that some of Celsius other activities were of a geophysical nature. He was the first to suggest a connection between the aurora borealis and changes in the magnetic field of the Earth. He observed the variations of a compass needle and found that larger deflections correlated with stronger auroral activity. In 1733 Celsius published a collection of 316 observations of the aurora borealis, made by himself and others from 1716 to 1732.Celsius was also involved in debate about the shape of the earth. He lived at a time when there were two opposing theories as to the Earths shape. A French school believed it to be prolate, but Isaac Newtons calculations showed it to be oblate. One way to resolve this debate was to measure the length of a degree of latitude at or near the equator and compare it to the corresponding length at or near the poles. An expedition involving Pierre Bouguer made measurements near the equator in Ecuador (see Preview, 208, 39-43) and one year later, in 1736, Celsius participated in an expedition to Lapland to make a similar measurement near the North Pole. This expedition was organised by the French Academy of Sciences and led by the French mathematician Pierre Louis Maupertuis (16981759). The result from Lapland confirmed that the Earths shape was oblate.Roger Henderson rogah@tpg.com.au21 PREVIEW AUGUST 2021'