{"id":968,"date":"2025-08-11T21:00:23","date_gmt":"2025-08-11T11:30:23","guid":{"rendered":"https:\/\/earthquake.net.au\/?p=968"},"modified":"2025-08-11T21:19:08","modified_gmt":"2025-08-11T11:49:08","slug":"large-rockfall-in-nsw-recorded-on-saa-seismograph","status":"publish","type":"post","link":"https:\/\/earthquake.net.au\/index.php\/2025\/08\/11\/large-rockfall-in-nsw-recorded-on-saa-seismograph\/","title":{"rendered":"Large rockfall in NSW recorded on SAA seismograph"},"content":{"rendered":"

Ask Roz Blue Mountains\u00a0<\/a><\/strong><\/h3>\n

August\u00a02\u00a0at\u00a05:00\u202fPM<\/strong><\/a>\u00a0\u00a0<\/h3>\n

LANDSLIDE in the Grose Valley. Today, Ian Smith noticed a significant new landslide on the northern wall from Evans Lookout, Blackheath.<\/span><\/p>\n

\u00a0<\/span><\/p>\n\n\n

\"\"<\/figure>\n\n\n\n

SRC<\/strong> detected a signal that rumbled for about a minute at 1:05am (morning of August 2nd) across multiple seismographs in Sydney’s west. Definitely not an earthquake signature, so quite possibly this rockfall.<\/p>\n\n\n\n

SAA’s E<\/em>ric Wang posted:<\/strong><\/h3>\n\n\n\n

Something a bit different than usual today. A rockfall occurred sometime last week around Evans Lookout, Blackheath in the Blue Mountains.<\/em><\/p>\n\n\n\n

\n

Adam Pascale from the Seismology Research Centre managed to pick up a seismic signal from the SRC’s nearby seismometers. One of our stations (HAZO) has a clear spike in the waveform at the same time Adam recorded it on his network. Below you can see the signal (green trace) at around 15:05 UTC or 1:05am EST on the 2nd<\/sup> August , lasting about a minute. <\/em>A spectrogram below the trace indicates the energy release as a function of time.<\/p>\n<\/div>\n\n\n\n

More information from Adam can be found in this Linkedin post: https:\/\/www.linkedin.com\/posts\/adam-pascale_forensic-seismology-activity-7359042118444568576-N-rG?utm_source=share&utm_medium=member_android&rcm=ACoAADJ_egkBBn5c9YtcU_43jD-11G8MqBy-n-U<\/a>.<\/em><\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Ask Roz Blue Mountains\u00a0 August\u00a02\u00a0at\u00a05:00\u202fPM\u00a0\u00a0 LANDSLIDE in the Grose Valley. Today, Ian Smith noticed a significant new landslide on the northern wall from Evans Lookout, Blackheath. \u00a0 SRC detected a signal that rumbled for about a minute at 1:05am (morning of August 2nd) across multiple seismographs in Sydney’s west. Definitely not an earthquake signature, so… Continue reading Large rockfall in NSW recorded on SAA seismograph<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-968","post","type-post","status-publish","format-standard","hentry","category-uncategorized","entry"],"_links":{"self":[{"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/posts\/968","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/comments?post=968"}],"version-history":[{"count":4,"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/posts\/968\/revisions"}],"predecessor-version":[{"id":976,"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/posts\/968\/revisions\/976"}],"wp:attachment":[{"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/media?parent=968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/categories?post=968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/earthquake.net.au\/index.php\/wp-json\/wp\/v2\/tags?post=968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}