We are the geodesy group at GNS (@ijhamling @gpsRuna @Nev_P @yunmengCao @betchamanma, Chris Rollins, and Laura Wallace). We use geodesy to track deformation!
Lower Hutt City, New Zealand
Joined November 2016
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GNSGeodesy retweeted
Eagle-eyed visitors to our website will have spotted a slow-slip earthquake (SSE), that our GNSS instruments have located near Hawkes Bay during the month of June. Today we give an update on what’s been happening beneath our feet. 👀👇geonet.org.nz/news/2oHVPr6zp… #eqnz
ALT June 2023 Hawkes Bay Slow Slip Event displayed on a map
GNSGeodesy retweeted
A sweeping Victoria University restructure has alarmed New Zealand’s tight-knit geoscience community – with one prominent earthquake scientist worried it could spell the loss of “world-renowned” expertise on our biggest natural hazards nzherald.co.nz/nz/fears-vict…
Yay 1.3M views! Glad that lots of people seem interested in the @HikurangiSZ ! If you haven’t already, out the short film about our research on this!
The Hikurangi Subduction Zone short documentary has more than 1.3m views on @YouTube, covering the latest research into Aotearoa NZ’s largest and most active fault.
Watch it below, made in partnership with @gnsscience, @nzeastcoastLAB & @NZcivildefence.
youtu.be/m_1dD2IbV70
Some more info on the ongoing Manawatu slow slip event from @Jamienzherald !
Slow-motion earthquakes unfolding deep beneath the North Island have released the equivalent energy of a magnitude 7.2 rupture – with intriguing potential links to last month’s big Hawke’s Bay shakes nzherald.co.nz/nz/theres-a-m…
Our latest update of what the ongoing Manawatu slow slip event has been up to…this is one of our long term slow slip events on @HikurangiSZ (this event has lasted about a year and a half so far), and it has been going strong in 2023.
In January we investigated ongoing slow slip events that our sensors have been detecting beneath the North Island, in Kāpiti and Manawatū. Today we check in on this activity and explore a possible link to the recent Pōrangahau earthquake sequence. 👇geonet.org.nz/news/6vAA6FVHI…
ALT Map of the central North Island of New Zealand with colour and arrows showing ground movement on the Hikurangi subduction zone this year.
Really nice talk today from Jamie Gurney of @UKEQ_Bulletin fame, who spoke to us about the work he is doing @gnsscience for a few months to improve our understanding of historical New Zealand earthquakes! Still so much to learn from these old quakes!
A nice thread from @mckcarlson @PNSN1 on our recent expedition to @HikurangiSZ ! McKenzie will be joining us @UTGeophysics later this year to start PhD research on the pressure data we acquired to investigate offshore slow slip events! Looking forward to see what she discovers!
Checking back in from Aotearoa New Zealand! We have finished our cruise along the Hikurangi Subduction Zone and are looking forward to diving into all the data we collected. But you might be wondering - what were we actually doing out there?
ALT Sunset view from the deck of the Thompson as we returned to Wellington. On the righthand side of the image is the deck of the ship with two yellow floats. To the right is the water and hills in the distance.
A successful end to a very busy research cruise! ROV Jason rescued two bottom pressure recorders that we deployed in 2020, that weren’t responding when we came to retrieve them in 2021. So glad to finally get them back, and with some nice data as well!! #PULSEeqnz
GNSGeodesy retweeted
And that's a wrap (literally) on #PULSEeqnz !!! 🙌🎉 Thanks to @EarthScope_sci #IrisPasscal for the loan of the equipment! It's headed back your way soon 🚢🌊
A nice story @LiquidRobotics has put together on our recent Waveglider survey of GNSS-Acoustic arrays we have deployed offshore the eastern North Island to detect whether the offshore @HikurangiSZ is locked-up and building stress to be relieved in future earthquakes
“Being able to use a Wave Glider to survey in the positions of seafloor acoustic arrays [...] is really helping to break open a new frontier,” said Dr. Wallace @utsystem. #geophysics #marinescience #acoustics #USV @Scripps_Ocean @gnsscience @sonardyne liquid-robotics.com/customer…
GNSGeodesy retweeted
Ahoy from the R/V Thomas Thompson, @UW’s world-class research vessel, currently off the coast of NE New Zealand! Your friendly neighborhood PNSN social media person McKenzie here - I’ll be spending the next ~week on the Thompson doing Subduction Zone research. Follow along!
ALT People on the deck of the research vessel pointing and looking towards a part of the ship.
ALT Members of the research cruise smiling and walking towards the camera on a sunny day outdoors. They all have their shades on and are carrying their packed luggage and bags.
ALT PNSN staff member aboard research vessel in half-zipped bright orange immersion suit.
ALT The University of Washington's Research Vessel, The Thomas Thompson.
We are starting the process tonight of getting the temperature sensors and fluid sampler/flowmeter back into the splay fault @JRSO_IODP Site U1518 at the Hikurangi subduction zone!🤞🤞that it works and that we get some good data when we come to retrieve it in five years!!
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Hello hello @JRSO_IODP Site U1519! Glad to see you’ve made some new friends in our two year absence, and the data we downloaded from you this morning sure is looking good!!
Nice to see you again @JRSO_IODP site U1518! Downloaded some beautiful data last night, recording slow slip @HikurangiSZ and we are now retrieving a 400 m long instrument string that has been collecting data and samples since early 2018! 🤞
Great to see another awesome colleague recognised for their achievements today—Cornel de Ronde of @gnsscience became a Fellow of @royalsocietynz ! His multidisciplinary work on circum-pacific arc volcanoes has really transformed our understanding of submarine volcanic processes👏
Ka rawe! Congratulations to our latest Ngā Ahurei Fellows elected to our Academy for distinction in research and advancement of science, technology or the humanities: bit.ly/3Fr8UkS
Big, big congrats to Phil Barnes @niwa_nz who was awarded the 2023 Shepard medal for excellence in Marine Geology from @SEPMGEO! Phil has made huge advances in understanding offshore active margins, including much of what we know about the @HikurangiSZ sepm.org/2023awardees
Don’t forget to check out a great webinar tomorrow by Lujia Feng from @EOS_SG on geodesy at the Sumatra subduction zone. This is at 9 am on 7th of March Singapore time, which is March 6th at 8 PM US East Coast time. Check your time zones and see below for the details!
*Rescheduled**
Next week: Geodesy Early Career Webinar:
Lujia Feng, Earth Observatory of Singapore
"The Sumatran GPS Array: A hero network in tectonic and climate studies"
March 7, 2023
9 am Singapore time (8pm EST)
More info:
connect.agu.org/geodesy/webi…