The quake originated about 600km north of Darwin in the Banda Sea (pictured)
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/earthquake-measuring-57-rocks-residents-600-kilometres-away-darwins-northern-suburbs
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-mail-united-kingdom
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/earthquakes
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tsunami
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/australia