The 1961 New South Wales earthquake (also called the Robertson earthquake) occurred on 22 May in the Australian state of

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

(NSW). It reached a

Richter magnitude The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 ...

of 5.5 and caused significant structural damage in a wide area. The earthquake was felt from the

Snowy Mountains The Snowy Mountains, known informally as "The Snowies", is an IBRA subregion in southern New South Wales, Australia, and is the tallest mountain range in mainland Australia, being part of the continent's Great Dividing Range cordillera system ...

region in the southeast of the state to Newcastle on the coast about north of

Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mountain ...

; to

Dubbo Dubbo () is a city in the Orana Region of New South Wales, Australia. It is the largest population centre in the Orana region, with a population of 43,516 at June 2021. The city is located at the intersection of the Newell, Mitchell, and Gol ...

in central eastern NSW about northwest of Sydney; and to Narrandera in the state's central south about southwest of Dubbo — an estimated area of . In the area of

Moss Vale Moss Vale is a town in the Southern Highlands of New South Wales, Australia, in the Wingecarribee Shire. It is located on the Illawarra Highway, which connects to Wollongong and the Illawarra coast via Macquarie Pass. Moss Vale has several he ...

Robertson Robertson may refer to: People * Robertson (surname) (includes a list of people with this name) * Robertson (given name) * Clan Robertson, a Scottish clan * Robertson, stage name of Belgian magician Étienne-Gaspard Robert (1763–1837) Places ...

, and Bowral about southwest of Sydney, the earthquake caused significant structural damage to buildings, while

rockfall A rockfall or rock-fallWhittow, John (1984). ''Dictionary of Physical Geography''. London: Penguin, 1984. . is a quantity/sheets of rock that has fallen freely from a cliff face. The term is also used for collapse of rock from roof or walls of min ...

s blocked the nearby

Macquarie Pass Macquarie Pass is an eight-kilometre-long section of the Illawarra Highway passing through Macquarie Pass National Park. It was opened in 1898, though had been used by the Wodi Wodi tribe. Macquarie Pass links the Southern Highland town of Ro ...

. Sydney suffered minimal damage from the earthquake itself, though the tremors and resulting power failures caused "considerable alarm".

Seismogram A seismogram is a graph output by a seismograph. It is a record of the ground motion at a measuring station as a function of time. Seismograms typically record motions in three cartesian axes (x, y, and z), with the z axis perpendicular to the ...

s at the Sydney suburb of Riverview were used to estimate the magnitude of the earthquake. There were only three known earthquakes of comparable magnitude prior to this one, occurring in 1930, 1934 and 1938.

References

Sources * 1961 earthquakes 1961 in Australia May 1961 events in Australia 1960s in New South Wales Earthquakes in Australia Disasters in New South Wales {{Australia-hist-stub

See also

References