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Cite as

Geissler, Wolfram; Shibaev, Sergey; Krüger, Frank; Baranov, Boris; Haberland, Christian; Tsukanov, Nikolai; Ploetz, Aline; Vollmer, Daniel; Pravkin, Sergey (2020): Laptev Sea Rift Seismological Network (SIOLA) Part I. GFZ Data Services. Dataset/Seismic Network. doi:10.14470/3O7561738646.

Identifier

10.14470/3O7561738646

FDSN network code

8B

DataCite metadata

HTML | JSON | XML | INSPIRE | Local XML source file

Terms/rights

Creative Commons Attribution 4.0 International Request access

Creator(s)

Geissler, Wolfram ^a; Shibaev, Sergey ^b; Krüger, Frank ^c; Baranov, Boris ^d; Haberland, Christian ^e; Tsukanov, Nikolai ^d; Ploetz, Aline ^a; Vollmer, Daniel ^c; Pravkin, Sergey ^f
a Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, ^b Yakutsk Branch Federal Research Centre Geophysical Survey, Russian Academy of Sciences, Yakutia, Russian Federation, ^c University of Potsdam, Potsdam, Germany, ^d P.P. Shirshov Institute of Oceanology of the Russian Academy of Sciences, Moscow, Russian Federation, ^e GFZ German Research Centre for Geoscience Helmholtz Centre Potsdam, Potsdam, Germany, ^f Arctic and Antarctic Research Institute, St. Petersburg, Russian Federation

Description

• (Abstract) The Laptev Sea region is one of the very few places on Earth where mid-ocean spreading centres continue into continental rift zones. The Gakkel Ridge, the active spreading centre in the Eurasia Basin of the Arctic Ocean, is characterized by well-defined seismicity close to its axial graben. In contrast below the Laptev Sea Shelf, which consists of a series of sediment filled grabens (500 km wide, 700 km long), only more diffuse seismic activity is observed. The pre-rift basement in the Laptev Sea is most probably formed by Late-Paleozoic and Late-Mesozoic fold belts. The Laptev Rift Basin is filled with Upper Cretaceous and Cenozoic sediments of variable thickness (1.5 to 14 km). The westernmost limit of seismicity is located close to edge of thick lithosphere of the Siberian Shield, which indicates some structural control on the recent tectonic activity. Focal depths are mainly less than 25 km (continent) and less than 10 km (ocean). Sparse observations of upper mantle earthquakes are under debate. The pole of rotation is very close to the study area, most probably to the south of Lena delta. Existing data indicate changes between compressional and extensional tectonic phases over short distances. This might be a consequence of the fact that the pole of rotation is close to our study area. The Khatanga-Lomonosov Shear Zone marks the border between the Gakkel Ridge and Laptev Sea Rift System, but its nature and extent are debated. Crustal extension seems to be concentrated in the eastern Laptev Sea area. Fault plane solutions are sparse and mostly not well determined to describe the movements in greater detail. Thus, with this project we intend to investigate details on tectonic movements in the Laptev Sea to better describe this amagmatic rifting and its consequences in an Arctic and global context. In general, we intend to increase the number of seismological stations for monitoring local earthquakes in the Laptev Sea/Lena delta region to fulfil the following objectives: (1) Location of microseismicity and its relationship with active faults. We want to identify seismologically active faults zones. In a first step we like to deploy instruments in earthquake areas, which are already identified by the global seismological network, though with low spatial resolution.(2) Focal mechanisms. What is the present geodynamic setting, where is extension and where is compression in the Laptev Sea and in the Lena delta region, where is the exact pole of rotation? What is the relation of the recent seismicity to pre-existing crustal and lithosphere structures (e.g., western Verkhoyansk Fold-and-Thrust Belt/Olenek Zone or South Anyui Suture)?(3) Lithosphere structure. It is interesting to note that despite the Cenozoic continental rifting in the Laptev Sea little volcanism is known. Thus, we like to compare the deep crustal and upper mantle structure with other continental rift systems (e.g. Afar) to enhance our understanding on the driving forces. The experiment is planned as a combination of stationary array(s) and moving small networks. Small networks are planned to operate for 1-2 years at one location before it will be moved to another. Waveform data are available from the GEOFON data centre, under network code 8B.

Title

Laptev Sea Rift Seismological Network (SIOLA) Part I

Publisher

GFZ Data Services

Publication Year

2020

Resource Type

Dataset / Seismic Network

Dates

1. Collected 2016-04-01
2. Accepted 2020-01-01
3. Issued 2021-01-27
4. Created 2021-01-27
5. Available 2026-01-01

Place(s)

1. Siberia
2. Laptev Sea
3. Laptev Sea

Contributor(s)

• Hosting institution: Deutsches GeoForschungsZentrum GFZ
• Data manager: GEOFON Data Centre
• Sponsor: Geophysical Instrument Pool Potsdam (GIPP)
• Project members: Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Yakutsk Branch Federal Research Centre Geophysical Survey, Russian Academy of Sciences, Yakutia, Russian Federation; University of Potsdam, Potsdam, Germany; P.P. Shirshov Institute of Oceanology of the Russian Academy of Sciences, Moscow, Russian Federation; GFZ German Research Centre for Geoscience Helmholtz Centre Potsdam, Potsdam, Germany; Arctic and Antarctic Research Institute, St. Petersburg, Russian Federation

Subjects

• SeisData terms: GIPP Geophysics MESI MiniSEED Passive seismic Seismometers Temporary Velocity
• GCMD keywords: Earthquakes Seismological stations Geophysical stations/networks Seismometers
• Other terms: Monitoring system; Seismological stations; Siberian Craton; Verkhoyansk Fold-and-Thrust Belt; continental rifting

Funding Reference(s)

1. Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ (GIPP201605)

Language

en

Sizes

1. 181GB

Reference(s)

1. Geissler, W.; Baranov, B.W.; Shibaev, S.W.; Haberland, C.; Tsunakov, N.W.; Dozorova, K.A. (2018). Russian-German project: Seismicity and neotectonics of the Laptev Sea region. Vestnik KRAUNTS Serie: Earth Sciences 1, pp.102-106.
2. Geissler, W.H.; Shibaev, S.; Haberland, C.; Vollmer, D.; Baranov, B.; Asseng, J.; Petrunin, S.; Krueger, F.; Tsukanov, N.; Peresypkin, D.; Gukov, S.; Tuktarov, R.; Kufner, S.-K. (2018). Seismicity of the Laptev Sea Rift. Strauss, J., Boike, J., Bolshiyanov, D.Y., Grigoriev, M.N., El-Hajj, H., Morgenstern, A., Overduin, P.P., Udke, A. Russian-German Cooperation-Expeditions to Siberia in 2017. Berichte zur Polar- und Meeresforschung 725, pp. 101-107. doi:10.2312/BzPM_0725_2018 DOI
3. Geissler W.H.; Shibaev S.; Haberland C.; Petrunin S.; Krueger F.; Peresypkin D.; Vollmer D.; Gukov S.; Tuktarov R.; Baranov B. (2017). Seismicity of the Laptev Sea Rift. Overduin P.P., Blender F., Bolshiyanov, D.Y., Grogoriev, M.N., Morgenstern, A., Meyer, H. Russian-German Cooperation-Expedotions to Siberia. Berichte zur Polar- und Meeresforschung 709, pp. 103-107. doi:10.2312/BzPM_0709_2017 DOI

FDSN network code

8B

Network dates

2016–2017

Data time range

2016–2017

Station Count

25

Seismic metadata

fdsnws-station FDSN StationXML SC3 XML

To retrieve waveform data and metadata (including instrument responses) for this and other seismic networks, see here. Network (data set) values are taken from DataCite XML with Metadata Properties version 4.4. Contact us if you are the PI and wish to make changes. Old-style network page for this network here.