Reflection seismic study of the Siljan Ring impact structure: Orsa - Raw data
Reflection seismic study of the Siljan Ring impact structure: Orsa - Raw data
snd1042-1-2
https://doi.org/10.57804/3gj5-xt38
Swedish National Data Service
Svensk nationell datatjänst
Landing page
Reflection seismic study of the Siljan Ring impact structure: Orsa - Raw data
Reflection seismic study of the Siljan Ring impact structure: Orsa - Raw data
snd1042-1-2
https://doi.org/10.57804/3gj5-xt38
Juhlin, Christopher
Juhlin, Christopher
Sturkell, Erik
Sturkell, Erik
Ebbestad, Jan Ove R.
Ebbestad, Jan Ove R.
Lehnert, Oliver
Lehnert, Oliver
Högström, Anette E. S.
Högström, Anette E. S.
Meinhold, Guido
Meinhold, Guido
Swedish National Data Service
Svensk nationell datatjänst
2023-08-16
Landing page
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
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.
2011-06-10
2011-06-15
Sweden
Sverige
Access to data through SND. Access to data is restricted.
Åtkomst till data via SND. Tillgång till data är begränsad.