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![Kinematics of active fault system in Rana and Jektvik interpreted from epicenter distribution and focal mechanisms. The extension directions are represented by black arrows. Gray open circles represent the earthquake epicenters. Mapped faults are from the Geological Survey of Norway (2011) database.]()
![Relocated seismicity and focal mechanisms in Jektvik (2013–2021) (clusters A1–D3) and Rana (2005–2021) (clusters R1–R3). P and T axes of focal mechanisms are shown as black square and triangles, respectively. Composite solutions are labeled as “cf.” Location of earthquake clusters is marked as black circles. Seismic and GNSS stations are shown as inverted triangles and diamonds (please refer to Fig. 1 for the color symbol). Black thick lines are the faults from Geological Survey of Norway (2011) database, and the Båsmoen fault is shown as maroon dashed lines.]()
![Seismicity and mapped faults in the central part of Nordland. Relocated seismicity (ML≥0.5), including that of the Rana and Jektvik swarms, are shown as black open circles. Notable previous seismic events are marked as blue stars: the estimated location of the 1819 M 5.9 Lurøy earthquake and the center of the 1978–1979 Meløy swarms. The mapped faults are obtained from Geological Survey of Norway (2011) (scale 1:250 000), and the location of Båsmoen fault is obtained from Olesen et al. (1994). The Global Navigation Satellite Systems (GNSS) and seismic stations used in this study are shown here. Seismic stations are shown with different colors: red for permanent stations, green for temporary stations deployed between 2013 and 2016, and gray for stations operated before 2011. Storglmvt. represents Storglomvatnet water reservoir. Inset map shows the location of the study area in a larger geographical map.]()
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Journal Article
Comparison of Earthquake Clusters in a Stable Continental Region: A Case Study from Nordland, Northern Norway
Journal: Seismological Research Letters
Publisher: Seismological Society of America
Published: 20 January 2023
Seismological Research Letters (2023) 94 (3): 1627–1642.
... in northern Norway, namely, Rana and Jektvik. Parts of northern Norway, located between the Northern Scandinavian mountains and the rifted Mid‐Norwegian margin, are seismically active, despite being situated in an SCR setting. As a result of collapses of the Caledonides and rifting in the North Atlantic...
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Includes: Supplemental Content
Image
Kinematics of active fault system in Rana and Jektvik interpreted from epic...
in Comparison of Earthquake Clusters in a Stable Continental Region: A Case Study from Nordland, Northern Norway
> Seismological Research Letters
Published: 20 January 2023
Figure 10. Kinematics of active fault system in Rana and Jektvik interpreted from epicenter distribution and focal mechanisms. The extension directions are represented by black arrows. Gray open circles represent the earthquake epicenters. Mapped faults are from the Geological Survey of Norway
Image
Relocated seismicity and focal mechanisms in Jektvik (2013–2021) (clusters ...
in Comparison of Earthquake Clusters in a Stable Continental Region: A Case Study from Nordland, Northern Norway
> Seismological Research Letters
Published: 20 January 2023
Figure 2. Relocated seismicity and focal mechanisms in Jektvik (2013–2021) (clusters A1–D3) and Rana (2005–2021) (clusters R1–R3). P and T axes of focal mechanisms are shown as black square and triangles, respectively. Composite solutions are labeled as “cf.” Location of earthquake clusters
Image
Seismicity and mapped faults in the central part of Nordland. Relocated sei...
in Comparison of Earthquake Clusters in a Stable Continental Region: A Case Study from Nordland, Northern Norway
> Seismological Research Letters
Published: 20 January 2023
Figure 1. Seismicity and mapped faults in the central part of Nordland. Relocated seismicity ( M L ≥ 0.5 ), including that of the Rana and Jektvik swarms, are shown as black open circles. Notable previous seismic events are marked as blue stars: the estimated location of the 1819 M 5.9
