10.57804/3gj5-xt38
Juhlin, Christopher
Christopher
Juhlin
0000-0003-2776-0846
Geosciences, Uppsala universitet
Sturkell, Erik
Erik
Sturkell
0000-0001-9282-6325
Department of Earth Sciences, University of Gothenburg
Ebbestad, Jan Ove R.
Jan Ove R.
Ebbestad
0000-0001-8769-3572
Museum of Evolution, Uppsala University
Lehnert, Oliver
Oliver
Lehnert
GeoZentrum Nordbayern, Friedrich-Alexander-University Erlangen-Nürnberg
Högström, Anette E. S.
Anette E. S.
Högström
Tromsø University Museum, Tromsø University
Meinhold, Guido
Guido
Meinhold
0000-0001-8375-8375
Universität Göttingen
Reflection seismic study of the Siljan Ring impact structure: Orsa - Raw data
Reflection seismic study of the Siljan Ring impact structure: Orsa - Raw data
Uppsala University
2023
Earth Science
Earth Science
geological disaster
geologisk katastrof
geophysics
geofysik
research
forskning
Science Keywords
Science Keywords
Geophysics
Geofysik
Geoscientific Information
Geovetenskap
Earth and Related Environmental Sciences
Geovetenskap och miljövetenskap
Natural Sciences
Naturvetenskap
2023-08-16
2011-06-10/2011-06-15
2011-06-10/2011-06-15
eng
10.5878/003001
10.5878/002985
10.1016/j.tecto.2012.08.040
1.7 MiB
2
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Two new reflection seismic profiles over the Paleozoic successions of the western part of the Siljan Ring impact structure were acquired during 2011, the Mora and the Orsa profile. This data set concerns the Orsa profile. The profile has length of c. 12 km and the processed data image the geological section to about 3 km depth (Silurian siliciclastic and Ordovician carbonate rocks to serveral hundred metres depth, below disturbed Paleoproterozoic crystalline basement). During the survey, 542 source points (VIBSIST 3000) were recorded by 320 receiver channels for 30 seconds. From this recording, the following data sets were generated and published: 1) decoded and quality controlled raw data; 2) pre-processed (shot geometry applied) data; 3) stacked data; 4) migrated data; 5) depth converted data and velocity field.
This dataset contains the raw data of the Orsa profile after decoding the sweep signal the VIBSIST 3000 source.
Processing steps for this data set:
1: Read decoded VIBSIST data
Key acquisition parameters are:
Number of channels: 320 (160–160)
Near offset: 0m
Geophone spacing: 10 m
Geophone type: 28 Hz single
Source spacing: 20 m
Source type: VIBSIST 3000
Hit interval between hammer blows: 100–200 ms
Sweeps per source point: 3–4
Nominal fold: 80
Recording instrument: SERCEL 428UL
Sample rate: 1 ms
Field low cut: Out
Field high cut: 400 Hz
Record length: 30 s
Profile length: 12 km
Source points: 542
Dates acquired: 10/6–15/6: 2011
File format: SEGD rev 2; Field acquisition notes scanned to PDF
Digital shot records, one file per shot, according to SEG technical standard SEG-D revision 2.1 (SEG-D_r2.1, 2006); https://seg.org/Publications/SEG-Technical-Standards
Data is available on request due to file size.
År 2011 gjordes två nya reflexionsseismiska undersökningar över västra delen av Siljansringen, Mora och Orsa profilerna. Siljansringen är en struktur som uppkom för ca 377 miljoner sedan genom ett meteoritnedslag. Orsa profilen (detta dataset) är ca 12 km lång och visar de geologiska strukturerna till ca 3 km djup. Geologin består av flera hundra meter med siluriska klastiska sedimentära bergarter och ordoviciska karbonatbergarter som vilar på paleoproterozoiskt kristallint urberg.
Datasetet innehåller rådata för Orsa-profilen, efter avkodning.
En mer detaljerad beskrivning av datasetet som inkluderar alla viktiga parametrar är tillgängligt på den engelska katalogsidan.
Data är tillgängliga efter förfrågan med anledning av filstorlek.
14.6087
61.20359
14.6087
61.12875
14.736758
61.12875
14.736758
61.20359
14.6087
61.20359
14.6727295
61.16617
Orsa Municipality
Dalarna County
Sweden
Swedish Research Council
2009-04492