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Hagfors Observatory

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Journal Article
Published: 01 June 1974
Bulletin of the Seismological Society of America (1974) 64 (3-1): 607–636.
.... Söderström B. Lindh B. Nordgren L. (1972) . Hagfors Observatory 1971 , Annual Report, FOA 4 rapport A 4503-TR78 , Research Institute of the Swedish National...
Journal Article
Published: 01 December 1974
Bulletin of the Seismological Society of America (1974) 64 (6): 1671–1683.
... events at the Hagfors Observatory in Sweden—the applicability of the m ( M )-method is increased about half a magnitude by including identification by negative evidence. 09 5 1974 Copyright © 1974, by the Seismological Society of America References Amos...
Journal Article
Published: 01 December 1974
Bulletin of the Seismological Society of America (1974) 64 (6): 1931–1941.
...Ilkka Noponen abstract The directions of arrival of P waves from distant seismic events were observed at three seismic array stations in Fennoscandia, NORSAR in Norway, Hagfors Observatory in Central Sweden, and the telerecording station at Helsinki in Finland. Anomalies in dt / dΔ up to 1 sec/deg...
Journal Article
Published: 01 February 1973
Bulletin of the Seismological Society of America (1973) 63 (1): 321–323.
... TO THE EDITOR SEISMOLOGICAL DISCRIMINATION OF EARTHQUAKES AND EXPLOSIONS USING MULTISTATION SHORT-PERIOD DATA BY F. M. ANGLIN AND H. ISRAELSON Recent studies (Anglin, 1971, 1972; Israelson, 1972) using data from the Yellowknife short-period array in Canada (YKA) and from the Hagfors Observatory in Sweden (HFS...
Journal Article
Published: 01 August 1974
Bulletin of the Seismological Society of America (1974) 64 (4): 1275–1293.
... are probably not a pure distance effect but could rather be attributed to lateral variations in the transmission properties of the Earth. This observation is consistent with the low detection capability for events in western U.S. reported for the Hagfors Observatory (Dahlman et al., 1971). There is, so far...
Journal Article
Published: 01 December 1979
Bulletin of the Seismological Society of America (1979) 69 (6): 1931–1964.
..., and slip. 2C Digitallong-periodsurface-wave re- Further restrictions on dip and slip. cordings at Hagfors Observatory Compute synthetic seismogramsfor Further depth restrictions. (HFS, APP, and SLL). the fault solutions found above and compare with the observed seismograms. Fix the strike to the range...
Journal Article
Published: 01 February 1981
Bulletin of the Seismological Society of America (1981) 71 (1): 25–35.
... to a group of very small earthquakes. These small earthquakes occurred close to the Hagfors Observatory in central Sweden (see Table 1). 25 26 R A G N A R S L U N G A A MODEL FOR USE OF AMPLITUDE OBSERVATIONS IN SOURCE MECHANISM INVERSION The far-field amplitudes are not only dependent on the three angles...
Journal Article
Published: 01 June 1978
Bulletin of the Seismological Society of America (1978) 68 (3): 864.
...Lane Johnson Copyright © 1978, by the Seismological Society of America 864 BOOK REVIEW lucid manner. The inclusion of a broad range of basic source material (including the texts of all pertinent treaties and a list of all announced and presumed nuclear explosions reported by Hagfors Seismic...
Journal Article
Published: 01 June 1978
Bulletin of the Seismological Society of America (1978) 68 (3): 863–864.
... and presumed nuclear explosions reported by Hagfors Seismic Observatory in Sweden during 1963 to 1976) make this book an invaluable addition to the library of anyone, scientist or layman, who is interested in a comprehensive nuclear test ban treaty and the issues it involves. MILO NORDYKE LAWRENCE LIVERMORE...
Journal Article
Published: 01 December 1979
Bulletin of the Seismological Society of America (1979) 69 (6): 1861–1887.
.... Karim R. A. (1970) . Earthquake history, seismicity and tectonics of the regions of Afghanistan , Seismological Centre, Faculty of Engin. , Kabol . Hagfors Observatory ( HFS ), The Swedish Research Institute for National Defence, Stockholm, Sweden...
Journal Article
Published: 01 September 2020
Russ. Geol. Geophys. (2020) 61 (9): 1056–1064.
... seismometers. Analog recording was stopped on 14 October 2002. In 2003, the Syktyvkar geophysical observatory was equipped with a SDAS digital seismic station, which had been developed by Geotekh+ research and production enterprise in cooperation with the GS RAS. Therefore, seismic records from the Syktyvkar...
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Journal Article
Published: 01 November 2012
Seismological Research Letters (2012) 83 (6): 1030–1037.
... reflecting that one of the pools changed method again. This case illustrates that the availability of high‐quality waveform data from permanent observatories remains very important for many reasons, one of which is the possibility of producing plots (like that of Fig.  3a ) of residuals as a function...
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Journal Article
Published: 17 March 2021
Seismological Research Letters (2021) 92 (3): 1747–1758.
... FOI) established an eight‐element short‐period seismic array outside Hagfors, western Sweden, as part of the international effort to monitor nuclear weapon tests (Fig.  1 ). The array is still in operation, now within the auspices of the Comprehensive Nuclear‐Test‐Ban Treaty Organization (CTBTO...
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Journal Article
Published: 01 April 2007
Bulletin of the Seismological Society of America (2007) 97 (2): 389–400.
..., beam reference point, Russia 67.6033 32.9944 200.0 — — * * ARU – Arti, Russia 56.4302 58.5625 250.0 * — * — BJO1 – Bjørnøya (Bear Island) 74.5020 18.9990 18.0 — — — * FINES – FINES array, beam reference point, Finland 61.4439 26.0738 150.0 * * * * HFSC2 – Hagfors...
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Journal Article
Published: 01 December 1982
Bulletin of the Seismological Society of America (1982) 72 (6B): S89–S129.
.... Der Z. A. Shumway R. H. (1980b) . Phase velocities of regional phases Pn, Sn, Pg , and Lg observed at the Cumberland Plateau Observatory and LASA , in Studies of Seismic Wave Characteristics at Regional...
Series: Society of Exploration Geophysicists Geophysical References Series
Published: 01 January 2001
DOI: 10.1190/1.9781560801788.ch6
EISBN: 9781560801788
... be developed to define the eligibility of suspicious seismic events for on-site inspection. From that result—and on some radically new ideas of broad-band seismometer design by Dr. Paul Pomeroy and others at the Lamont Geological Observatory—Geotech, a decade later, placed on sale an orthogonally oriented...
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