#EQUIP-G project:
making quantum⚛️ technologies for #geosciences and #geodesy🌍 available to #EU🇪🇺 researchers

Get in touch, get trained, and benefit from #quantum #gravimeters!

👉 https://equip-g.eu/
#earthscience #gravimetry

@konrad @internetarchive oh wow, this looks amazing! I need to figure out how to get in place something like this for my measuring.earh/minutes project

#OCR #geodesy #digitisation

🛠️⚛️#EQUIP-G training in Poland🇵🇱 !
Learn how to operate #quantum #gravimeters through hands-on experience, fruitful discussions, debates and fun!

Get in touch, get trained, and use quantum #gravimetry!

👉 https://tinyurl.com/ynszkh49
👉 https://equip-g.eu/
#earthscience #geodesy🌍

#NASA satellite data tracking Earth's #gravity changes cannot be used to predict oncoming #earthquakes, debunking previous hypotheses about early warning capabilities.
#EarthScience #Seismology #Geodesy #sflorg
https://www.sflorg.com/2026/02/es02182601.html

📣Preliminary Reference Frame Product based on EPN-Repro3 (C2370) now available at #EPN_CB

More info:
👉https://www.epncb.oma.be/_productsservices/coordinates/repro3.php
👉https://www.epncb.oma.be/pub/mail/EUREF/eurefmail.12371

Any feedback to help improve this product is highly appreciated!
#geodesy #referenceframes🌍 #GNSS🛰️🛰️

📌The International Association of Geodesy invites you to the XI Hotine-Marussi Symposium,

What?
• advances in theoretical #geodesy🌍
• developments in modelling and data processing
• interdisciplinary cooperation between geodesy and other #Earthsciences

Where?
Genoa, Italy

When?
September 7-11, 2026

Deadline for abstract submission
April 19, 2026

👉https://geodesy.science/event/xi-hotine-marussi-symposium/
👉https://hotinemarussi2026.unige.it/
#earthscience #IAG

You can pick *at most two* of these three things related to coordinate reference systems:

- I don't want to understand [work with] dynamic datums (time dependent coordinates).
- I want a single geographic CRS worldwide.
- I want centimeter accuracy.

Enjoy your choice!

PS In case you forgot from high-school, tectonic plates are moving. Each one on its own way.

#gis #gischat #geodesy

📣 New IAG News System – Stay connected more easily!

Since June 2025, all news from the IAG and its components is centrally published on the new website. The platform serves as the main hub for announcements, reports, calls, events, and job opportunities.

Stay updated via
📧 #IAG & #GGOS mailing lists (~1,200 subscribers)
🔄 RSS feed
📄 Monthly PDF Newsletter (redesigned since January 2026)

👉 https://geodesy.science/2026/iag-news-new-ways-to-stay-connected/
#geodesy #earthscience

You may know WGS84 is a "datum ensemble".
But ETRS89 too!

With the latest changes in EPSG it now has 57 members!

https://epsg.org/datum_6258/European-Terrestrial-Reference-System-1989-ensemble.html

#gis #geodesy

📣Contribute to shape the future of #gravimetry in Europe!
First #𝗘𝗤𝗨𝗜𝗣-𝗚 𝗘𝗨-𝘄𝗶𝗱𝗲 𝗶𝗻-𝗽𝗲𝗿𝘀𝗼𝗻 𝘄𝗼𝗿𝗸𝘀𝗵𝗼𝗽🇪🇺

📅3-5 June, 2026
📍Potsdam, Germany

𝘙𝘦𝘨𝘪𝘴𝘵𝘳𝘢𝘵𝘪𝘰𝘯 𝘯𝘰𝘸 𝘰𝘱𝘦𝘯!
👉https://events.spacepole.be/event/268/

ℹ️https://equip-g.eu/
#quantum⚛️#gravity #geodesy🌍

🎉The IAG has partnered with the UN Global Geodetic Center of Excellence (UN-GGCE)

Also the National Geographic Institute (NGI)🇧🇪 and the @ORB_KSB are proud to represent Belgium as a key partner of the UN-GGCE, and are committed to combine their expertise and resources in #geodesy🌍 to enhance global geospatial initiatives

👉 https://ggim.un.org/UNGGCE/#partners

#EQUIP-G project is focused on building the future European Quantum⚛️🇪🇺 Infrastructure for #gravimetry
Proud to be part of it!

👉https://equip-g.eu/
#geodesy🌍

#EUREF 2025 resolutions and new issue of the EUREF newsletter

Check it out!

👇👇
EUREF newsletter issue 6 https://www.epncb.oma.be/_documentation/newsletters/EUREF_Newsletter_2025_01.pdf
EUREF 2025 Resolutions https://www.euref.eu/sites/default/files/minutes/EUREF_2025_Resolutions_Paper.pdf

#geodesy🌍 @ReferenceFrames #GNSS🛰️🛰️🛰️ #EPN_CB #EPOS

If I had a dollar every time someone said the haversine formula was "good enough", I could probably have a mediocre meal out. Vincenty all the time.

#geodesy #geodata #algorithms #precision

📣#EUREF symposium 2026🌍🛰️

📍Paris
📅23-25 June 2026

Important deadlines:
- abstract submission: April 23
- early registration fees: April 23
- regular registration: May 10

👉https://euref2026.sciencesconf.org.
#geodesy #referenceframes #GNSS #EPN_CB

RE: https://mastodon.social/@ieeespectrum/115928806426237013

🕯️

#mathematics, #geodesy, #computer #science #women #womenInHistory

RE: https://spore.social/@minouette/114036206774374378

Gladys West died January 17 at age 95, leaving behind an extraordinary legacy in mathematics and geodesy.

My portrait and bio are below.

#womenInSTEM #BlackInSTEM #mathematics #satellites #geodesy #EarthScience

Obituary:

https://thezebra.org/2026/01/18/dr-gladys-west-mathematician-whose-work-made-gps-possible-dies-at-95/

you could use an oblique Mercator projection, but that only makes one side of the northern hemisphere larger
https://en.wikipedia.org/wiki/File:Mercator_Polar_Transverse.gif
#mapprojection #geodesy

@x_tof @lokjo

https://en.wikipedia.org/wiki/Gladys_West
"Before GPS became an everyday utility, it was a hard mathematical problem.
In 1950s–70s, Gladys West - mathematician @ U.S. Naval Surface Warfare Center in Dahlgren, VA - worked on one of the most difficult challenges in satellite navigation: accurately modeling the Earth itself.
Modern GPS accuracy depends on:
• Precise satellite ephemerides
• Accurate gravitational field modeling
• Correct Earth reference frames
West’s work directly advanced all three
Her contributions weren’t widely recognized; it wasn’t until 2018 that she was inducted into the USAF Space and Missile Pioneers Hall of Fame - decades after GPS reshaped global navigation, logistics, finance, defense & mobile computing...
Before GPS could tell us where we are, someone had to define what the Earth actually looks like mathematically…”
#Engineering #GPS #Geodesy #STEM #TechHistory #WomenInTech #DataScience #Infrastructure #WomenInGeoSpatial
H/T Evan Kirstel [despite their puerile AI-generated image of Ms. West]

Spherical Earth (Cartography 🗺️)

Spherical Earth or Earth's curvature refers to the approximation of the figure of the Earth as a sphere. The earliest documented mention of the concept dates from around the 5th century BC, when it appears in the writings of Greek philosophers. In the 3rd century BC, Hellenistic astronomy established the roughly spherical shape of Earth as a...

https://en.wikipedia.org/wiki/Spherical_Earth

#SphericalEarth #Earth #Geodesy #Spheres #Cartography #AncientAstronomy