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James La Greca

@jameslagreca.bsky.social

181 followers 200 following 1 posts

PhD researcher at Unimelb studying earthquake geology and seismology | He/Him

Posts Replies Media

Reposted by James La Greca

Rob Langridge @aotearoa-unzpd.bsky.social · 19/02/2026

Last week trenching the northern Alpine Fault at Blue Grey River w/ @stef-eq-geology.bsky.social and @jameslagreca.bsky.social and friends looking for paleoearthquakes. Many sandfly enemies too

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Reposted by James La Greca

Adam Pascale @seislologist.bsky.social · 04/04/2025

“Super-shear rupture earthquake” sounds dramatic, but it’s just describing relative speed, i.e. opposite to the rupture having a sub-shear wave velocity. Far from the epicentre, only very low frequency energy remains, a potential issue for structures with a matching natural period, as seen last week

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Reposted by James La Greca

Dr. Dee Ninis @deeninis.bsky.social · 28/03/2025

A M7.7 followed ~11 mins later by a M6.4 aftershock - still a strong earthquake and likely damaging in itself - in Myanmar/ Burma about 40 mins ago. It took ~12 minutes for the associated waveforms to arrive at our recorders in the @earthquakes-au.bsky.social network in southeast Australia.

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James La Greca @jameslagreca.bsky.social · 17/12/2024

About to fly home after more than a month away attending both the AEES and GSNZ conferences and finalising PhD fieldwork on the Alpine Fault, Aotearoa. I owe a lot to @aotearoa-unzpd.bsky.social for supervising and mentoring me, especially over the last month :)

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Reposted by James La Greca

Dr. Dee Ninis @deeninis.bsky.social · 17/12/2024

A M7.5 (prelim.) - with a current depth estimate of ~50 km - near Vanuatu not long ago, as detected by all the sites in our seismic network in southeast Australia.

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Reposted by James La Greca

Rob Langridge @aotearoa-unzpd.bsky.social · 16/12/2024

The fun side of being in the field though is swimming pools, pizza, hot springs, sandflies (not), rain, and other. Hard work, good times

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Reposted by James La Greca

Rob Langridge @aotearoa-unzpd.bsky.social · 16/12/2024

New trench excavated across the Alpine Fault at Blue Grey River. Definitely reverse dominant at this site. Thanks to @jameslagreca.bsky.social and Liv for their hard work. We were lucky with weather but eventually chased off by torrential rain.

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Reposted by James La Greca

Rob Langridge @aotearoa-unzpd.bsky.social · 11/12/2024

Last weekend we had an amazing campaign on the Alpine-Wairau (Big) Bend of the Alpine Fault, Glenroy River. Thanks to @jameslagreca.bsky.social Liv & Alex for doing the mahi. We located THE one and only Alpine Fault outcrop in the valley and also sampled the Glenroy rock avalanche. Still buzzing!

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