Browsing by Subject "1171 Geotieteet"

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  • Hilander, Markus (2016)
  • Todorovic, Sara; Rekola, Hanna; Muukkonen, Petteri; Bernelius, Venla (Helsingin kaupunki, 2020)
    Helsingin kaupungin pelastuslaitoksen julkaisuja
  • Heinonen, Jussi S.; Luttinen, Arto V. (2013)
    Our two-person “flood basalt task force” (authors Arto Luttinen and Jussi Heinonen) of the Finnish Museum of Natural History (LUOMUS) spent three weeks in Mozambican countryside collecting samples of the little-studied flood basalt formations of the Jurassic ~180 Ma Karoo large igneous province. The expedition was related to the recently launched MARZ (Magmatism in the Africa- Antarctica Rift Zone) project that is funded by the Academy of Finland. Fieldwork was carried out within three provinces, Tete, Sofala, and Manica in cooperation with Professor Daud Jamal, Dr. Estêvão Sumburane, Mr. Teofilo Gove (all from the Eduardo Mondlane University in Maputo), and Dr. António Alface (Direcção Nacional de Geologia, Tete). During the field campaign, we took lodging in towns and villages and also camped on the forest savannah, and were greatly impressed by the friendliness and helpfulness of the local people. Despite the tropical conditions, the quality of the bedrock outcrops was surprisingly good and we were able to collect ~150 rock samples, well above our initial expectations. The samples will be analysed for major and trace elements, Sr and Nd isotopes, and selected samples will be used for Ar- Ar plagioclase and U-Pb zircon dating. Our samples are from areas that have not been previously studied in detail and the results hopefully will shed light on the mysteries related to the origin of Karoo and other flood basalt provinces. More information about the MARZ project: marzENG.htm
  • Heinonen, Aku; Seitsamo-Ryynänen, Minja (2021)
  • Heinonen, Jussi S. (2017)
    Nick Zentner is a senior lecturer at the Department of Geological Sciences of the Central Washington University (CWU), United States. After accidentally ending up with studying geology, he built up interest in its narrative aspects and started working at the CWU in 1992. Initially he was a technician, but he was also responsible for community outreach. He started gaining wider popularity among locals via the University’s own television channel, on which he hosted a geology talk show with other CWU geologists as guests. Today, he has released several highly viewed videos in YouTube, he runs his own geology show on a regional television channel, and guides open-to-all geological excursions in Washington State and its surroundings. The University has acknowledged his contributions in the popularization of geology as a part of his job description. Nick highlights that general interest, rehearsing of public performance, genuineness, and humbleness are the most important characteristics of a science popularizer. An e-mail list that anyone can subscribe to is an important tool in informing his audiences about upcoming public events. Nick’s examples can help those who are interested in popularizing geology in Finland. YouTube would probably be one of the most easily accessible platforms for such projects in the future. It is worth noting, however, that when narrating stories about billion-year-or-more old rocks, the approach should be somewhat different than in the geologically active northwestern United States.
  • Järvinen, Matias; Jylhä, Markus; Muukkonen, Petteri (University of Helsinki, Faculty of Science, Department of Geosciences and Geography, 2019)
    Department of Geosciences and Geography C
  • Heinonen, Jussi S. (2013)
    Climbing is not usually associated with Finland, because of lack of mountains, and even the highest hills are generally quite gently sloping. Some impressively steep and tens of meters high rock faces have, however, formed in places that have been strongly affected by shearing, faulting or glacial erosion during the last glacial maximum. Finnish climbing community has been increasingly active since the late 1950’s in developing some of these faces for different climbing styles. Unlike in mountaineering, the main goal in rock climbing is not to conquer the hill, but to climb it via as difficult route as possible. As the bedrock of Finland is characterized by Precambrian granites and gneisses, most of the climbing takes place along crack lines or thin edges and crystal faces, which means that the routes are often rather demanding. At current, about 100 rope climbing and over 400 bouldering destinations can be found in Finland. Climbers have traditionally respected nature and Finnish climbers and landowners have built relatively good relationships over the years.
  • Yli-Halla, Markku Juhani; Suomela, Raija (2019)
  • Veikkolainen, Toni; Oinonen, Kati; Vuorinen, Tommi; Kortström, Jari; Mäntyniemi, Päivi; Lindblom, Pasi; Uski, Marja; Tiira, Timo (Institute of Seismology, University of Helsinki, 2021)
    Seismologian instituutti perusti yhteistyössä Helsingin kaupungin kanssa vuosina 2019–2020 kolmesta seismisestä havaintoasemasta koostuvan HelsinkiNet-verkon. Verkon asemat toimivat Kuninkaantammessa (KUNI), Lauttasaaressa (LAUT) ja Vuosaaressa (VUOS) sekä valtakunnallisen että pääkaupunkiseudun asemaverkon automaattisten havaintojärjestelmien yhteydessä. Asemien kohinataso osoittautui sijaintiin nähden matalaksi ja pitkiä datakatkoja ei ollut. HelsinkiNet-asemien lisäksi pääkaupunkiseudun länsiosissa toimivat St1:n lämpövoimalahankkeen valvontaan perustetut asemat HEL1-HEL5. Vuonna 2020 vahvistettuja seismisiä tapauksia oli 30 km:n säteellä Rautatientorista 484. Suurin osa niistä oli räjäytyksiä. Indusoituja maanjäristyksiä tapahtui Espoossa erityisesti Otaniemessä mutta myös Koskelossa. Luonnollisia maanjäristyksiä oli kolme, niistä kaksi 0,7 magnitudin tapausta Hakunilassa ja yksi –0,5 magnitudin tapaus Laajarannassa. Vähintään 0,0 magnitudin indusoitujen ja luonnollisten maanjäristysten määrä oli 24. Suurin osa maanjäristysten kansalaishavainnoista liittyi St1:n Otaniemen hankkeeseen.
  • Helmisaari, Heljä-Sisko Marketta; Kaarakka, Lilli M; Korpela, Leila; Lindroos, Antti-Jussi; Nieminen, Tiina M; Nöjd, Pekka; Smolander, Aino (Suomen Maaperätieteiden seura, Helsingin yliopisto, Maataloustieteiden Osasto, 2019)
    Pro Terra
  • Räisänen, Jouni (2019)
  • Gregow, Hilppa; Mäkelä, Antti; Tuomenvirta, Heikki; Juhola, Sirkku; Käyhkö, Janina; Perrels, Adriaan; Kuntsi-Reunanen, Eeva; Mettiäinen, Ilona; Näkkäläjärvi, Klemetti; Sorvali, Jaana H; Lehtonen, Heikki; Hilden, Mikael; Veijalainen, Noora; Kuosa, Harri; Sihvonen, Matti; Leijala, Ulpu; Ahonen, Sami; Johansson, Milla M; Haapala, Jari J.; Korhonen, Hannele; Ollikainen, Markku; Lilja, Saara; Ruuhela, Reija; Rasmus, Sirpa; Särkkä, Jani; Siiriä, Simo-Matti (Suomen ilmastopaneeli, 2021)
    Suomen ilmastopaneeli Raportti
  • Kuikka, Sakari (2012)
  • Heinonen, Jussi S. (2017)
    Magma-wallrock interaction in crustal magma chambers (a process known as crustal assimilation) is critical to the evolution of a magmatic system and the formation of many economically important base and precious metal deposits. Although the generalized crustal assimilation model is largely accepted, the details of the interactions remain relatively poorly characterized. One of the major issues has been the lack of models that integrate mass and energy exchange, thermodynamics and geochemistry. The project titled “Partial melting processes at the contact zones of layered intrusions” proposes to explore magma-wallrock interaction at three major intrusive complexes in Antarctica (Muren and Utpostane, 180 Ma), USA (Duluth, 1100 Ma), and Finland (Fennoscandian LIP, 2440 Ma). The study is a multidisciplinary effort which will include state-of-the-art computational modeling with recently developed energy-constrained equations. The modeling will be tested against existing and new geochemical data, as well as partial melting experiments of wallrock. The results are expected to provide unique insight into the generation of layered intrusions and associated ore deposits. The project is conducted at the University of Helsinki in collaboration with the Geological Survey of Finland, University of California Santa Barbara, Central Washington University, and Swiss Federal Institute of Techonology Zürich. The project is funded by the Academy of Finland from September 2016 to August 2021. Proposals for potential collaboration (e.g. additional case studies) are very welcome!
  • Hilander, Markus; Välimaa, Iida (2014)
    This article discusses the process of drawing a geographical mental map as a tool for fostering young people’s thinking skills in geography. When students draw mental maps of their immediate surroundings, such as the home and school environment, they come into contact with values; for instance, what they consider as their favourite places and which places they avoid. The theory of existential semiotics by Eero Tarasti is the first attempt to discover the life of signs ‘from within’; that is, how signs are derived from values. This study sheds light to the ways in which these values are actualised during the process of drawing a mental map. Our aim is to open up Tarasti’s terminology in the contexts of pedagogy and geography. In addition, we are seeking a method to approach young people’s everyday life experiences in teaching and researching geography. As a result, we suggest a new meta-language for visual methodologies; this language concentrates on describing the steps of drawing rather than conducting a content analysis of the maps. This article integrates human geography, existential semiotics and visual methodologies.