<div>The Ramu-Markham Fault (RMF) runs along the northern edge of the Markham Valley in eastern Papua New Guinea’s Morobe Province. It is the active plate boundary between the South Bismarck Plate and&nbsp;the New Guinea Highlands/Papuan Peninsula Blocks, and is thought to accommodate about 4 cm/yr of convergence associated with the Finisterre arc-continent collision. Because Papua New Guinea’s recently published national seismic hazard map revealed a potential vulnerability of its 2nd largest city, Lae, to RMF earthquakes, Lae has become the focus of a seismic risk study. One of the aims of this study is to improve the characterisation of the earthquake potential along the RMF, and for this reason a new Global Navigation Satellite System (GNSS) campaign has been undertaken to re-survey over 70 existing benchmarks in and around Morobe Province, including about 35 benchmarks in and around the city of Lae itself. The vast majority of these benchmarks have now been surveyed, and in this paper we discuss the survey and a preliminary analysis of the data.</div><div><br></div>Presented at the 2023 Australian Earthquake Engineering Society (AEES) Conference

<div>The 22nd September 2021 (AEST) <em>M</em>W 5.9 Woods Point earthquake in the Victorian High Country was the largest onshore event to have occurred in Victoria in the modern instrumental era, and probably since European settlement. Geoscience Australia’s National Earthquake Alerts Centre (NEAC) received in excess of 43,000 felt reports from the Australian community, with peak rates of almost 700 reports per minute.&nbsp;The felt reports ranged in severity from personal alarm to building damage. These crowd-sourced felt reports are received by Geoscience Australia in real time and mapped on the publicly available EQ@GA website. Other studies showed that felt reports alone can be used to estimate the potential impact of the earthquake in its early stages. The number and the spatial extent of felt reports are easily visible on the website, and the ShakeMap and FeltGrid features show the modelled and reported intensity as the reports are being received. These sources of information can help support emergency managers in making decisions for coordinated response. <b>Citation:</b> Pejic, T., Allen, T.I.; Crowd-sourced Felt Reports for 22 September 2021 MW 5.9 Woods Point earthquake: actions of the public; <i>AJEM</i> 39:2, April 2024, pp 51-56.