How seismology helps the world detect nuclear weapons tests (amongst other things), with Professor Hrvoje Tkalčić

Imagine a global network of sensor stations, ready to detect even the smallest nuclear weapons test. This network is in fact a reality. As we learned in our last episode, the Comprehensive Nuclear Test Ban Treaty Organisation’s monitoring network is up, running, and ready for the Treaty to enter into force. One of the most important of those stations is located in Australia's remote Northern Territory – the Warramunga Seismic and Infrasound Facility – and it's directed by Professor Hrvoje Tkalčić, Head of Geophysics at the Australian National University.In this episode, Professor Tkalčić joins our host, A/Prof Liz Williams, to talk about what seismology actually is – how waves generated by earthquakes, storms, and even whale calls can be used to see inside the earth – and how the extraordinary silence of the Australian outback makes it one of the best places on the planet to listen for nuclear tests.Professor Tkalčić is also the author of a brand-new popular science book called, When Worlds Quake: The Quest to Understand the Interior of Earth and Beyond, which has just been released in the English language by Princeton University Press [link to publisher page here]. CREDITSGuest: Professor Hrvoje Tkalcic Host: A/Prof Elizabeth WilliamsAudio Producer: Martin Franklin (East Coast Studio)The usual end matterNuclear Matters is a production of the Australian National University College of Systems and Society and the ANU Nuclear Stewardship Network. We acknowledge the Traditional Owners of the lands on which this podcast is being recorded on or listened to, and pay our respects to their Elders – and all First Nations people.If you want to send us some feedback on an episode, email us at [email protected] in mind that this podcast is intended for information and education only. In particular, nothing in this episode is intended to serve as medical advice - please consult a qualified medical practitioner.The views and opinions expressed in each episode are those of the individual speakers and do not represent the official policy or position of the Australian National University College of Systems and Society or the University as a whole.