Marko Holma
YOU?
Author Swipe
View article: Positioning, navigation, and timing on the Moon and Mars with galactic cosmic rays
Positioning, navigation, and timing on the Moon and Mars with galactic cosmic rays Open
The muometric wireless navigation system (MuWNS) is a technology enabling signal reception for machine controlling and communication systems underground where a radio or GPS signal would normally be lost. The penetrative power of muons in …
View article: AGEMERA: Integrating Non-Invasive Geophysical Technologies, AI, and Social Strategies for Sustainable Critical Raw Material Exploration in Europe
AGEMERA: Integrating Non-Invasive Geophysical Technologies, AI, and Social Strategies for Sustainable Critical Raw Material Exploration in Europe Open
The AGEMERA project (Agile Exploration and Geo-Modelling for European Critical Raw Materials), funded under the Horizon Europe programme and recognised as a Horizon Europe Technology Success Story (European Commission: European Health and …
View article: The Horizon Europe AGEMERA Project: Innovative Non-Invasive Geophysical Methodologies for Mineral Exploration
The Horizon Europe AGEMERA Project: Innovative Non-Invasive Geophysical Methodologies for Mineral Exploration Open
The AGEMERA project (Agile Exploration and Geo-Modelling for European Critical Raw Materials) advances the exploration of critical raw materials in the EU by deploying innovative, non-invasive geophysical technologies. Funded by the Horizo…
View article: U-Pb geochronology of wolframite from Polski Gradets, Bulgaria and Barruecopardo, Spain, using in situ LA-ICP-MS technique
U-Pb geochronology of wolframite from Polski Gradets, Bulgaria and Barruecopardo, Spain, using in situ LA-ICP-MS technique Open
This study presents U-Pb age data obtained using an in situ LA-ICP-MS technique applied to wolframite samples from Polski Gradets (Bulgaria) and Barruecopardo (Spain). Analytical conditions were optimized using YGX2113 (wolframite) and GJ1…
View article: Autonomous password generation and setting system with Cosmic Coding and Transfer (COSMOCAT) and Cosmic Time Calibrator (CTC)
Autonomous password generation and setting system with Cosmic Coding and Transfer (COSMOCAT) and Cosmic Time Calibrator (CTC) Open
As wireless sensor networks (WSNs) with Internet of Things (IoT) devices become increasingly widespread and more complex, the threat of cyber-attacks is also increasing. One of the most common ways WSNs can be hijacked is when passwords/ID…
View article: The Horizon Europe AGEMERA Project: Innovative Non-Invasive Geophysical Methodologies for Mineral Exploration
The Horizon Europe AGEMERA Project: Innovative Non-Invasive Geophysical Methodologies for Mineral Exploration Open
The AGEMERA project [1], which is an acronym for Agile Exploration and Geo-Modelling for European Critical Raw Materials, employs three non-invasive survey methods for mineral exploration: a passive seismic method to assess bedrock hardnes…
View article: Callio lab: an underground and above ground,laboratory—overview and prospects for high energy and applied physics
Callio lab: an underground and above ground,laboratory—overview and prospects for high energy and applied physics Open
This overview provides a comprehensive insight into Callio Lab, a versatile multidisciplinary research platform, by describing the events and actions that have led to the development of the project-based, pay-by-service approach to organiz…
View article: Sustainable development in mining "Asarel-Medet" JSC: The Bulgarian mining representative in international research projects AGEMERA project: Critical raw materials
Sustainable development in mining "Asarel-Medet" JSC: The Bulgarian mining representative in international research projects AGEMERA project: Critical raw materials Open
Asarel-Medet JSC Mining and Processing Complex is the first, biggest and leading Bulgarian company for open pit mining and processing of copper and other types of ores. Asarel-Medet JSC is the only Bulgarian company that participates in th…
View article: Petrography and geochemistry of Cretaceous bauxites from Jajce, Bosnia and Herzegovina
Petrography and geochemistry of Cretaceous bauxites from Jajce, Bosnia and Herzegovina Open
The study presents petrographic and compositional data of Late Cretaceous bauxite deposits in the area of Jajce, Bosnia and Herzegovina. Results indicate that bauxites exhibit ooidic to pisodic textures enclosed within a pelitomorfic matri…
View article: Posušje bauxites in Bosnia and Herzegovina: A source of critical raw materials and a paleoclimatic marker
Posušje bauxites in Bosnia and Herzegovina: A source of critical raw materials and a paleoclimatic marker Open
The present study provides geochemical and geochronological data about Posušje bauxites in Bosnia and Herzegovina with the aim to characterize them as Critical Raw Materials (CRMs) sources and to put constraints on the time and genesis of …
View article: Muon production in the lunar regolith: Opportunities for muon imaging in the Moon
Muon production in the lunar regolith: Opportunities for muon imaging in the Moon Open
Muography studies density differences within a medium using muons. They are elementary particles generated by primary cosmic rays as they collide with the matter. On Earth, muons are produced at ca. 15-25 km altitude in the upper atmospher…
View article: Callio Lab – a GoldenEye field trial site at the Pyhäsalmi mine in Finland
Callio Lab – a GoldenEye field trial site at the Pyhäsalmi mine in Finland Open
Callio Lab is a multidisciplinary research centre operating at the Pyhäsalmi mine in Finland and it is coordinated by the Kerttu Saalasti Institute of the University of Oulu.  The Callio Lab team is responsible for hosting, facil…
View article: Using a new geophysical tool for improving underground safety in mining and civil engineering: time-sequential muography
Using a new geophysical tool for improving underground safety in mining and civil engineering: time-sequential muography Open
Tunnelling and underground mining face many risks threatening underground operations. Such hazards include sudden incidents of dangerous and violent rock bursts and cave-ins. The likelihood of these disastrous events increases as operation…
View article: Assessing the potential of Assarel porphyry copper deposit for critical raw materials: mineral-geochemical data for combination with agile exploration methods and better geo-modeling
Assessing the potential of Assarel porphyry copper deposit for critical raw materials: mineral-geochemical data for combination with agile exploration methods and better geo-modeling Open
The supply of European critical raw materials (CRMs) does not currently meet the European demand. This gap is predicted to increase, making Europe even more dependent on outside suppliers. AGEMERA is a project to help tackle this strategic…
View article: Atmospheric Muography for Imaging and Monitoring Mesoscale Convective Systems
Atmospheric Muography for Imaging and Monitoring Mesoscale Convective Systems Open
Large-scale solid bodies on Earth such as volcanoes and man-made pyramids have been visualized with solid earth muography, and the recently invented technique, acqueous muography, has already demonstrated its capability to visualize ocean …
View article: Periodic sea-level oscillation in Tokyo Bay detected with the Tokyo-Bay seafloor hyper-kilometric submarine deep detector (TS-HKMSDD)
Periodic sea-level oscillation in Tokyo Bay detected with the Tokyo-Bay seafloor hyper-kilometric submarine deep detector (TS-HKMSDD) Open
Meteorological-tsunami-like (or meteotsunami-like) periodic oscillation was muographically detected with the Tokyo-Bay Seafloor Hyper-Kilometric Submarine Deep Detector (TS-HKMSDD) deployed in the underwater highway called the Trans-Tokyo …
View article: Empowering Underground Laboratories Network Usage 
Empowering Underground Laboratories Network Usage  Open
<p>Underground laboratories provide unique environments for science, research and business, but many are not known or stay underutilised. Some of the underground laboratories are located or are planned to be built around the Baltic S…
View article: Callio Spacelab - An underground laboratory for future exploration and analogue missions in Finland
Callio Spacelab - An underground laboratory for future exploration and analogue missions in Finland Open
<p>An isolated but highly connected underground mine can be used as an analogue environment for the astronauts operating without sight to the home planet and with limited connectivity to the psychologically-important &#8220;home&…
View article: Studying Terrestrial Impact Structures With Cosmic-Ray Induced Atmospheric Muons
Studying Terrestrial Impact Structures With Cosmic-Ray Induced Atmospheric Muons Open
<p>Muography is used in, e.g., volcanology, archaeology, engineering and mineral exploration to characterise material densities [1&#8211;2]. To our knowledge, muography has not been applied for impact crater studies.</p><…
View article: Seeing through old mining wastes with secondary cosmic rays
Seeing through old mining wastes with secondary cosmic rays Open
<p>Tailing sand is almost only gangue-minerals-containing mining waste formed during the ore enrichment process. This waste material is deposited as a slurry in tailings storage facilities. Waste rock is defined as a rock material re…
View article: Muography as a Novel Field Observation Tool of Geomorphic Research
Muography as a Novel Field Observation Tool of Geomorphic Research Open
<p>Cosmic-ray muography is a novel methodology for monitoring and spatial imaging density variations in solid and liquid materials. It is based on the translation of the &#8220;raw&#8221; muon flux attenuation data to meaning…
View article: Thoughts about an Ideal Validation Environment for Muography Applications
Thoughts about an Ideal Validation Environment for Muography Applications Open
Muography has many possibilities ranging from imaging volcanoes to observing civil infrastructures, industrial targets, or even small-scale objects.G. F. Knoll has laid out the fundamentals of radiation detection and measurement of muon fl…
View article: Muography, Outreaching, and Transdisciplinarity: Toward the Golden Age of Muography
Muography, Outreaching, and Transdisciplinarity: Toward the Golden Age of Muography Open
We demonstrate that cosmic-ray muography is a fundamentally multidisciplinary research field requiring an outreaching and transdisciplinary approach to support and speed up its current positive growth stage.The transit from expert-driven m…
View article: Muography and Geology: Does It Matter Which Continent YouStand on?
Muography and Geology: Does It Matter Which Continent YouStand on? Open
The present work has one aim and one aim only: to increase the geological credibility of simulations of muon propagation in real-world rocks.We accomplish this by introducing five different sets of real-world geological systems.Our approac…
View article: Periodic Sea-Level Oscillation in Tokyo Bay Detected with the Tokyo-Bay Seafloor Hyper-Kilometric Submarine Deep Detector (TS-HKMSDD)
Periodic Sea-Level Oscillation in Tokyo Bay Detected with the Tokyo-Bay Seafloor Hyper-Kilometric Submarine Deep Detector (TS-HKMSDD) Open
Meteorological-tsunami-like (or meteotsunami-like) periodic oscillation was muographically detected with the Tokyo-Bay Seafloor Hyper-Kilometric Submarine Deep Detector (TS-HKMSDD) deployed in the underwater highway called the Trans-Tokyo …