🌊Our sailing season continued with another expedition to the Gulf of Bothnia. ⚒️Vibrohammer coring of glacial outwash deposits. 🧪Successful retrieval of the @finmari-ri.bsky.social benthic lander after 6 weeks seafloor deployment. RCF #PHYTOTRANS, Tulanet #MONISEIS and TAU #GlacialWind projects

We received a new EXO2 multiparameter sonde with sensors for temp., salinity, pH, dissolved oxygen, turbidity, chl-a and FDOM. It will be used for studies of marine particle dynamics and submarine springs - among other things. A new addition to the @finmari-ri.bsky.social research infrastructure!

Olisiko sinulla sopivia geologisia valokuvia? – Tule mukaan rikastuttamaan geoportaalia! www.geologia.fi/olisiko-sinu...

A new addition to the @finmari-ri.bsky.social research infrastructure! This week we received user training on the Secrel mini-GI source, an important component of our new marine multi-channel seismic system. www.sercel.com/en/product/g... The first surveys are in two weeks!

#SecuCoast project completed 66 km of floating transient electromagmetic profiler (FloaTEM) surveys in the search of submarine groundwater in Barcelona. Collaboration between @gtk.fi and the Groundwater Hydrology Group at @upc.edu. 🌊 secucoast.weebly.com/news/floatem...

Greetings from #EGU26! 🧪In case you are into groundwater-seawater interactions, check out these presentations.

🌊The sailing season opened with an expedition to the Gulf of Finland and the Gulf of Bothnia 🧪Water column particle profiling, sediment coring, resuspension experiments and finally the deployment of a benthic lander Thanks PHYTOTRANS project, @spilling.bsky.social @eeroasmala.bsky.social and others!

In the past two days, I've had the pleasure to attend the @finmari-ri.bsky.social Days 2026 at the University of Turku. I've enjoyed the variety of talks over topics ranging from biogeochemistry to seawater-groundwater interaction to particle dynamics. It's also always a pleasure to see colleagues!

The first #SecuCoast Newsletter is published. 🧪 Find out about our activities during the first project year. secucoast.weebly.com/news/first-n...

Our new open access article in Terra Nova: Evolution Model for the Paleoproterozoic Talvivaara Mudstone-Hosted Ni-Zn-Cu-Co Deposit in Fennoscandia. Lahtinen, R., Laitala, J.J., Virtasalo, J.J. and Whitehouse, M.J. 2026 (in press). Terra Nova, 1–12. onlinelibrary.wiley.com/doi/10.1111/...

New article! 🧪Talvivaara mudstone is a highly metal-enriched organic-rich sedimentary rock in Finland that records the evolution of Earth surface and coastal ocean during the globally significant Shunga Event in the aftermath of the Great Oxidation Event. onlinelibrary.wiley.com/doi/10.1111/...

Itämeren rautamangaanisaostumat on ajankohtainen aihe. Kerron rautamangaanitutkimuksistamme Suomen geologisen seuran kokouksessa yhdessä Joonas Wasiljeffin kanssa. Teen myös lyhyen katsauksen merenpohjan mineraalien kaupallisen hyödyntämisen tilanteeseen maailmalla www.linkedin.com/feed/update/...

🌊New study examines how protective berms settle and behave over the long term using PLAXIS finite element simulations 🧪An iterative method is introduced to determine the modified compression index in structured clays, accounting for destructuration at depth www.sciencedirect.com/science/arti...

🌊Extremely interesting sediment samples received from the Japan Trench. They were collected during the #IODP3 Expedition 503 "Hadal Trench Tsunamigenic Slip History - Buried in Trench". 🧪We continue our research into bioturbation and trace fossils in the hadal zone!

Hallitus ehdottaa täydentävässä talousarviossaan leikkauksia ammattikorkeakoulujen ja yliopistojen rahoitukseen. Tämä on isku koulutukselle ja tutkimukselle, sanoo Tieteentekijöiden toiminnanjohtaja Nina Hahtela. @ninahahtela.bsky.social 👉 tieteentekijat.fi/hallituksen-...

Uusi tutkimus osoittaa, että Euroopan kesät voivat pidentyä vuosisadan loppuun mennessä jopa 40 päivällä. Syynä on arktisen alueen nopea lämpeneminen, joka heikentää lämpötilaeroa päiväntasaajan ja pohjoisnavan välillä ja tekee kesän säätiloista pysyvämpiä. #Ilmasto www.gtk.fi/ajankohtaist...

Researchers from GTK unlocked 7000-year environmental archive from a Baltic Sea concretion. The samples collected from the seabed recorded shifts in oxygen levels, climate variability, and pollution events with remarkable precision. Read on: www.gtk.fi/en/current/r... @mudjones.bsky.social

Two days on an interesting topic❗ 🌊28 Oct 2025, seminar Particle Dynamics in Coastal Marine Environments 🧪29 Oct 2025, workshop of #RCF #Phytotrans project on the same topic. Thank you to the invited speakers and participants! @gtk-fi.bsky.social

Hyvää geodiversiteettipäivää! Maiseman elottomat osat ovat tuntemamme ja arvostamamme luonnon perusta, vaikka ne ovatkin usein piilossa katseilta. Kauniin maiseman lisäksi ne antavat raaka-aineita, vaikuttavat veden laatuun, hiilen kiertoon ja ovat välttämättömiä hyvinvoiville ekosysteemeille.

Törmäyskraatterit voivat tarjota elinoloja. "Lappajärven esimerkki osoittaa, että aurinkokunnassa (...) yleiset parikymmenkilometriset kraatterit voivat pysyä meille tutuille elämänmuodoille mukavan lämpiminä miljoonia vuosia. Se on käsittämättömän pitkä aika", @teemuohman.bsky.social kirjoittaa. 🔭

📣Highest-resolution #geochronology ever reconstructed for a #ferromanganese concretion 🧪We combined #¹⁴C, anthropogenic Pb and Co-chronometer techniques in a Bayesian age model 🌊Ce-anomaly, δ56Fe and magnetic mineralogy record variability in the Baltic Sea over 7000 years doi.org/10.1038/s432...

🧪Joonas Wasiljeff explains how we study ferromanganese concretions from the Baltic Sea🌊, how they form on the seafloor what their significance is in the marine ecosystem.

Hyvää Itämeripäivää!💙 Mitä GTK:lla tehdään Itämeren hyväksi ja miten geotieteet auttavat Itämeren suojelua? Siitä lisää🔗 Tule viettämään kanssamme Itämerifestiä Helsingin Kansalaistorille tänään klo 12‒19: itameripaiva.fi/tapahtuma/it... #Itämeripäivä #Itämerifest www.gtk.fi/ajankohtaist...

Tänään Itämeripäivä! Kirjoiteltiin vähän blogia aiheeseen liittyen @mudjones.bsky.social @eeroasmala.bsky.social Karoliina Koho ja Kristiina Nuottimäki @gtk-fi.bsky.social

Another successful deployment of the #Finmari benthic lander. It will measure near-bottom flow, particle and nutrient dynamics for the next 10 weeks in the RCF #PHYTOTRANS project. @gtk-fi.bsky.social @finmari-ri.bsky.social @syke.fi @tvarminne.bsky.social @spilling.bsky.social

Algal blooms in the Baltic Sea. Image taken yesterday by Sentinel-2.

Merigeologitkin keräävät joskus kiviä.🌊 Tältä tutkimusalueelta ei ollut aiemmin otettu yhtään geologista näytettä – emmekä voi suojella sitä, mitä emme tunne. Tutkimus on avain merialueiden suojeluun. Ole sinäkin #ItämerenOnnellistaja ja lue, miten voit vaikuttaa: www.metsa.fi/projekti/bio...

Oletko huomannut meressä kohtia, joissa vesi on selvästi kylmempää tai merenpohjassa näkyy outoja kuoppia?🌊 #SecuCoast hankkeessa tutkitaan pohjaveden ja meriveden vuorovaikutusta ‒ ja tarvitsemme sinun havaintojasi! Osallistu tutkimukseen: secucoast.weebly.com/fi.html #Meri #Ympäristö

🧪New article on the mineralogy of Baltic Sea #ferromanganese concretions 🌊Mn layers are birnessite with microbially-mediated dendritic texture. Fe layers are ferrihydrite with admixed detrital grains; the layers remain after the dissolution of birnessite. RCF #Fermaid project doi.org/10.1016/j.gc...

📣Seen any groundwater springs in the sea? #SecuCoast citizen science campaign is collecting observations! 🧪Submarine springs may be visible as freshwater spots in the sea, as pits on the seafloor, or as openings in the sea ice. 🌊More info and a reporting form: secucoast.weebly.com/citizen-scie...

Oletko nähnyt pohjavesilähteitä meressä? #SecuCoast -hankkeen kansalaistiedekampanja kerää havaintoja! Merenpohjalähteet erottuvat tavallisesti makean veden kohtina meressä, merenpohjan kuoppina tai aukkoina merijäässä. Lisätietoja ja havaintojen ilmoituslomake: secucoast.weebly.com/fi.html

The #SecuCoast project successfully completed a field campaign in Hanko, Finland. The aim was to gain new understanding of the mixing of groundwater and seawater in the Lappohja coastal aquifer. We were lucky to enjoy the long daylight of Finnish summer secucoast.weebly.com/news/hanko-s...

📣Seminar: Particle Dynamics in Coastal Marine Environments 28 Oct 2025, Geological Survey of Finland (GTK) 🌊Join us for a full-day seminar exploring the role of particle dynamics in coastal environments 🧪Registration and abstract deadline 30 July 2025 Register here: forms.office.com/e/D0t9pex0PX

The #Finmari benthic lander was successfully deployed today. It will measure near-bottom flow, particle and nutrient dynamics for the next 6 weeks in the RCF #PHYTOTRANS project. @gtk-fi.bsky.social @finmari-ri.bsky.social @syke.fi @spilling.bsky.social

Web page of the Water4All #SecuCoast project has opened! SecuCoast investigates groundwater-seawater interactions in coastal aquifers in the Baltic Sea, Mediterranean Sea and Norwegian Sea to enhance the management of groundwater resources and marine ecosystem services. secucoast.weebly.com

Maanjäristysten laukaisemat sameusvirtaukset vaikuttavat syvänmeren hautavajoamien pohjan elämään Toistuvien virtausten ansiosta hautavajoamien pohjaeläinyhteisöjen lajisto ja toiminta ovat ympäröivää syvänmerenpohjaa monimuotoisempia. @gtk-fi.bsky.social www.gtk.fi/ajankohtaist...

MIELENKIINTOINEN TYÖPAIKKA: Konemestari tutkimusalus #Geomari :lle. Tarjolla on monipuolisia töitä meriolosuhteissa. Oletko kiinnostunut olemaan vastuussa "oman" aluksen huollon suunnittelusta, valvonnasta ja toteuttamisesta? @gtk-fi.bsky.social valtiolle.fi/fi/tyopaikat...

🌊Earthquake-triggered mass flows regulate benthic communities and bioturbation in the hadal trenches. @gtk-fi.bsky.social #marinegeology www.gtk.fi/en/current/e...

🗞Partners in RESCUE, which is funded by Water4All and co-funded by the #europeanunion, highlight groundwater in award winning #science magazine 💧The article appears in EOS & focuses on groundwater as a sustainable solution to the #water crisis. Read more 👉https://u.garr.it/f1m6W Photo: Ruden AS

🧪It is possible to grow #ferromanganese concretions in the laboratory. 🔬The bright patches at the edge of a concretion in the tomography image precipitated during a 12-week laboratory experiment. ⚗️The ferromanganese growth captured Co, V, Ni, Zn, and Mo from solution. RCF #FERMAID project

Sediments in boreal estuaries capture a significant part of the metal load from acid sulphate soils. However, estuaries may lose their capture capacity as they fill with sediment. This process is particularly strong in land uplift areas. bsssjournals.onlinelibrary.wiley.com/doi/full/10....

The contents of three large metal cases have changed our understanding of life under the ocean. Inside were vials of sediment hauled up from a record 8km below the surface of the Pacific Ocean. au.news.yahoo.com/strange-disc...

The bottom of the Japan Trench has some of the harshest conditions for life on Earth, but despite this, it is crawling with deep-sea creatures www.livescience.com/planet-earth...

🧪Bioturbation in the deepest parts of oceans is more diverse and active than previously thought 🌊Hadal benthic communities are regulated by gravity flows triggered by earthquakes ⚒️Gravity-flow deposits are first colonized by deposit-feeders, followed by chemosymbionts www.nature.com/articles/s41...

Magnetotactic bacteria in the Baltic Sea #ferromanganese concretions produce bullet-shaped magnetosomes.🧪 The magnetosomes are spherical or cubic in the oceanic ferromanganese nodules. RCF #FERMAID project Full article: agupubs.onlinelibrary.wiley.com/doi/10.1029/...

📣New article! Elemental salinity proxies were tested in North America (Lake Superior, Chesapeake Bay, Gulf of Mexico), northern Europe (Baltic Sea) and Argentina (Laguna Mar Chiquita). 🧪The proxies generally predict salinity well. Yet, care must also be taken www.sciencedirect.com/science/arti...

NEW ARTICLE🧪 🧫Growth of a #ferromanganese concretion in the lab is documented for the first time by micro-CT. 📊The growing concretion captured trace metals (Co, V, Ni, Zn, Mo) from solution. SLTS #FeCoVERY project RCF #FERMAID project @finmari-ri.bsky.social dx.doi.org/10.1111/gbi....

Portugal has banned Deep-sea Mining in national waters. Portugal has *a lot* of national waters.

Kiinnostaako kesä merigeologisten tutkimusten parissa tutkimusalus #Geomari lla? Haemme kesäharjoittelijaa merenpohjan geofysikaalisiin seismisiin luotauksiin ja sedimenttitutkimuksiin. valtiolle.fi/fi/tyopaikat...