Limpar
43 resultados

Acesso aberto

Tipo do recurso

Ano de criação

Produção nacional

Revisado por pares

Áreas

Idioma

Editores

Artigo Revisado por pares

H. Nevanlinna, A. Ketola, L. Häkkinen, A. Viljanen, K. Ivory,

... and compared with corresponding indices from the present Nurmijärvi magnetic observatory nearby. Helsinki magnetic activity data are ... on the same level as the activity at Nurmijärvi during the last four sunspot cycles in 1953– ... large magnetic storms has been more frequent at Nurmijärvi. There have been about 300 magnetic storm days ( ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

1993 - American Geophysical Union | Geophysical Research Letters

Artigo Revisado por pares

Antti Ojala, Tomi P. Luoto, Joonas J. Virtasalo,

... from the 23 m deep lacustrine basin of Nurmijärvi, a lake in south-central Finland, are composed ... depth marker for the recent deposits. However, the Nurmijärvi section also reveals a ca. 10-year-long ...

Tópico(s): Geological formations and processes

2016 - Elsevier BV | Quaternary Geochronology

Artigo Revisado por pares

Reija Hietala-Koivu,

... during 1954–1998 in the districts of Toholampi, Nurmijärvi and Liperi, in west, south and east Finland, ... areas of the buffer zones in Toholampi and Nurmijärvi increased steadily during the period concerned. At the ...

Tópico(s): Forest Management and Policy

2002 - Elsevier BV | Agriculture Ecosystems & Environment

Artigo Revisado por pares

Reija Hietala-Koivu, Tiia Järvenpää, Juha Helenius,

... and woodland patches were analyzed in Toholampi, Yläne, Nurmijärvi and Liperi localities in Finland over the period ... while the corresponding drops in the figures for Nurmijärvi, Toholampi and Liperi were 77, 65 and 59%, ...

Tópico(s): Forest Management and Policy

2003 - Elsevier BV | Agriculture Ecosystems & Environment

Artigo Acesso aberto Revisado por pares

Takashi Kikuchi, H. Lühr, K. Schlegel, H. Tachihara, M. Shinohara, Teitaro KITAMURA,

... correlated with the magnetic field X component at Nurmijärvi (56° CGMLAT) during the presubstorm period, but the ... electric field at EISCAT but reduce it at Nurmijärvi, we demonstrate that the R2 FACs grow concurrently, ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

2000 - American Geophysical Union | Journal of Geophysical Research Atmospheres

Artigo Acesso aberto Revisado por pares

Mikko Honkasalo, Miika Linna, Timo Sane, Atte Honkasalo, Outi Elonheimo,

... patients is based on general practitioners, whereas in Nurmijärvi the follow-up of type 1 and most ... services due to diabetes and its complications. In Nurmijärvi, where diabetes care was centralised, more type 1 ...

Tópico(s): Diabetes Management and Education

2014 - BioMed Central | BMC Health Services Research

Artigo Acesso aberto Revisado por pares

A. Viljanen, Minna Myllys, H. Nevanlinna,

... data from modern observatories at corresponding magnetic latitudes (Nurmijärvi, Finland, magnetic latitude ~57 N; Tartu, Estonia, ~54. ... to be optimal, the top variation in the Nurmijärvi data is about 3700 nT/h (July 1982), ...

Tópico(s): Solar and Space Plasma Dynamics

2014 - EDP Open | Journal of Space Weather and Space Climate

Artigo Acesso aberto Revisado por pares

R. Kerttula, К. Мурсула, T. Pikkarainen, J. Kangas,

... Sodankylä; L = 5.1) and a midlatitude station (Nurmijärvi; L = 3.3) during 18 storms occurring in ... 0 to a maximum on day 3 at Nurmijärvi or day 4 at Sodankylä. The diurnal distribution ...

Tópico(s): Solar and Space Plasma Dynamics

2001 - American Geophysical Union | Journal of Geophysical Research Atmospheres

Artigo Revisado por pares

A. Pulkkinen, A. Viljanen, K. Pajunpää, Risto Pirjola,

... right above the pipe, and another at the Nurmijärvi Geophysical Observatory about 30 km southwest. The largest ... on the recordings of the geomagnetic field at Nurmijärvi. The geoelectric field was calculated by using the ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

2001 - Elsevier BV | Journal of Applied Geophysics

Artigo Revisado por pares

Tomi P. Luoto, Antti Ojala,

... study, we examined annually laminated sediments from Lake Nurmijärvi (Finland) for their fossil Chironomidae assemblages over a ... of chironomids as a paleoclimate proxy in the Nurmijärvi varved sediment record with the potential value of ...

Tópico(s): Tree-ring climate responses

2016 - SAGE Publishing | The Holocene

Artigo Acesso aberto

H. Nevanlinna,

... between Helsinki H-results and the present day Nurmijarvi observatory data, reveal similar daily variation curves at ... follows the same linear relationship as H at Nurmijarvi. We believe that the Helsinki H-data series ...

Tópico(s): History and Developments in Astronomy

1997 - Society of Geomagnetism and Earth, Planetary and Space Sciences | Journal of geomagnetism and geoelectricity

Artigo Revisado por pares

Antti Ojala, Jussi Mattila, Joonas J. Virtasalo, Jukka Kuva, Tomi P. Luoto,

... preserved in clastic-biogenic varves of the Lake Nurmijärvi sequence from central-southern Finland. Deformation structures include ... more widespread phenomenon. The age of the Lake Nurmijärvi seismic event further demonstrates that high-magnitude seismic ...

Tópico(s): Geological formations and processes

2018 - Elsevier BV | Tectonophysics

Artigo Revisado por pares

R. R. Heacock, M. Kivinen,

... College, Alaska, Thule, Greenland, and at Sodankyla and Nurmijarvi, Finland, from November 1967 through January 1970. Cross- ...

Tópico(s): Astro and Planetary Science

1972 - American Geophysical Union | Journal of Geophysical Research Atmospheres

Artigo Revisado por pares

R. R. Heacock, Deborah J. Henderson, Jeffrey S. Reid, M. Kivinen,

... were seen at Fairbanks, Macquarie Island, Anchorage, or Nurmijärvi. The slopes were found to have a significant ...

Tópico(s): Magnetic confinement fusion research

1976 - American Geophysical Union | Journal of Geophysical Research Atmospheres

Artigo Acesso aberto Revisado por pares

Krzysztof Nowożyński, T. Ernst, Jerzy Jankowski,

... was applied to data from three observatories, Belsk, Nurmijarvi and Sodankyla, for the period 1985 January 1 ...

Tópico(s): Solar Radiation and Photovoltaics

1991 - Oxford University Press | Geophysical Journal International

Artigo Revisado por pares

Maohua Ma,

... strips at multiple scales? Location: Lepsämä River watershed, Nurmijärvi, Southern Finland. Methods: Species diversity indicators included both ...

Tópico(s): Land Use and Ecosystem Services

2008 - Wiley | Applied Vegetation Science

Artigo Revisado por pares

Åke Forslund, Serhiy Belyayev, Nickolay Ivchenko, G. Olsson, Terry Edberg, Andriy Marusenkov,

... the SMILE instrument was carried out at the Nurmijarvi Geophysical Observatory, showing high linearity (within 6 nT ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

2007 - IOP Publishing | Measurement Science and Technology

Artigo Revisado por pares

Katriina Soini, Hanne Vaarala, Eija Pouta,

... the basis of their sense of place in Nurmijärvi, a municipality located close to the Helsinki Metropolitan ...

Tópico(s): Land Use and Ecosystem Services

2011 - Elsevier BV | Landscape and Urban Planning

Artigo

Ioanna Grammatikopoulou, Antti Iho, Eija Pouta,

... uses data from an auction experiment conducted in Nurmijärvi, Southern Finland. We account for socio-demographic, spatial ...

Tópico(s): Water resources management and optimization

2012 - Taylor & Francis | Food Economics

Artigo Revisado por pares

Liisa Juusola, A. Viljanen, Max van de Kamp, E. I. Tanskanen, Heikki Vanhamäki, Noora Partamies, Kirsti Kauristie,

... of the magnetic field from the IMAGE station Nurmijärvi (NUR, MLAT ∼57°). NUR data indicated that the ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

2014 - American Geophysical Union | Space Weather

Artigo Acesso aberto Revisado por pares

A. J. Stocker, E.M. Warrington, D. R. Siddle,

... along the midlatitude trough (Uppsala to Bruntingthorpe and Nurmijärvi to Bruntingthorpe) and one path (Qaanaaq to Ny‐ ...

Tópico(s): GNSS positioning and interference

2013 - Wiley | Radio Science

Artigo Acesso aberto

L. J. Pesonen, M.A.H. Leino, H. Nevanlinna,

... yield values which are in broad agreement with Nurmijärvi Magnetic Observatory data. We also show that variations ...

Tópico(s): Geophysical and Geoelectrical Methods

1995 - Society of Geomagnetism and Earth, Planetary and Space Sciences | Journal of geomagnetism and geoelectricity

Artigo Revisado por pares

H. Nevanlinna, Pentti Tenhunen, Risto Pirjola, Jaakko Annanpalo, A. Pulkkinen,

... problems. As inferred from analogue magnetograms of the Nurmijärvi Geophysical Observatory in southern Finland, the largest time ...

Tópico(s): Seismic Waves and Analysis

2001 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics

Artigo Revisado por pares

R. Kerttula, К. Мурсула, T. Pikkarainen, J. Kangas,

... L=5.1) and a mid-latitude station (Nurmijärvi; L=3.3) during 18 storms occurring in ...

Tópico(s): Earthquake Detection and Analysis

2001 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics

Artigo Revisado por pares

A. Viljanen,

... field variations were simultaneously measured at the nearby Nurmijarvi Geophysical Observatory. Two models are presented here to ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

1998 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Power Delivery

Artigo Revisado por pares

I. S. Zonneveld,

... during 1954–1998 in the districts of Toholampi, Nurmijärvi and Liperi, in west, south and east Finland, ... areas of the buffer zones in Toholampi and Nurmijärvi increased steadily during the period concerned. At the ...

Tópico(s): Plant Ecology and Soil Science

1989 - Elsevier BV | Journal of Arid Environments

Artigo Acesso aberto Revisado por pares

James H. Whitcomb,

... network of five Fennoscandian seismograph stations (Uppsala, Umeå, Nurmijärvi, Kongsberg, Copenhagen) with a maximum separation of 1300 ...

Tópico(s): Seismology and Earthquake Studies

1969 - Seismological Society of America | Bulletin of the Seismological Society of America

Artigo Revisado por pares

Hamish Johnston,

... observatories, either in operation or under construction, are Nurmijarvi in Finland, Průhonice in Czechoslovakia, Memanbetsu in Japan, ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

1951 - American Geophysical Union | Journal of Geophysical Research Atmospheres

Artigo Acesso aberto Revisado por pares

Audrey Schillings, L. Palin, Gemma Bower, H. J. Opgenoorth, S. E. Milan, Kirsti Kauristie, Liisa Juusola, G. D. Reeves, M. G. Henderson, L. J. Paxton, M. Lester, Maria Hamrin, Max van de Kamp,

... UT and was observed at Lycksele, Rørvik and Nurmijärvi, the second spike was recorded at 17:41 ...

Tópico(s): Geomagnetism and Paleomagnetism Studies

2023 - EDP Open | Journal of Space Weather and Space Climate