OCSN Blog Posts

Infrasonic Detection of Sonic Booms

Infrasound

Seismic analysis

Data analysis

Identification of infrasonic sonic boom signatures received on 23/9/25.

Oceanic Infrasound-stimulated seismic wave - T Wave

Infrasound

Seismic analysis

Data analysis

An investigation of unusual seismic signals associated with the magnitude 6.7 earthquake which occured off the southern coast of New Zealand on 25 March 2025.

Reports from the Oberon Citizen Science Network bird call monitoring network

Birds

Data analysis

A short report on ongoing work into developing custom, automated reports for the growing network of BirdNET-pi and Birdweather PUC bird call detection devices deployed in Oberon LGA by OCSN members.

Wind farm visual impact assessment – part 4

wind farms

An exploration of methods for assessing the visual impact of proposed wind farms, in several parts. In this post we compute the visual impact assessment metric proposed by James F. Palmer, using the proposed Paling Yards wind farm as an example.

Wind farm visual impact assessment – part 3

wind farms

An exploration of methods for assessing the visual impact of proposed wind farms, in several parts. In this post we scale up computation of compound viewsheds to encompass entire wind farms.

Wind farm visual impact assessment – part 2

wind farms

An exploration of methods for assessing the visual impact of proposed wind farms, in several parts. In this post we consider compound viewsheds.

Wind farm visual impact assessment – part 1

wind farms

An exploration of methods for assessing the visual impact of proposed wind farms, in several parts. The concept of viewsheds is introduced in this post.

Birdweather PUC Review

Birds

Technology

Review

If you are considering electronic monitoring and identification of birdcalls, this review may help you decide if a Birdweather PUC is the right choice for you or not.

G-weighting infrasound data

Infrasound

Technical Reports

Infrasound data captured by devices such as the Raspberry Shake & Boom needs to be G-weighted to properly reflect the sensitivity of the human ear (and body) to the low frequencies present (by definition) in infrasound. This is a technical article documenting some progress in doing this weighting.

Minor earthquake in Hazelbrook

Local earthquakes

An M1.6 earthquake near Hazelbrook in the Blue Mountains was detected by seismic sensors operated by OCSN members