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. Show less..

Data contains personal data

Language

English

Method and outcome

Time period(s) investigated

2011-06-10 – 2011-06-15

Data format / data structure

Data collection

Time period(s) for data collection: 2011-06-10 – 2011-06-15
Instrument: SERCEL 428UL - Seismic
Instrument: VIBSIST 3000 - Seismic

Geographic coverage

Geographic spread

Geographic location: Orsa Municipality

Geographic description: Siljan Ring impact structure, central Sweden, near Orsa

Administrative information

Responsible department/unit

Department of Earth Sciences

Funding

Funding agency: Swedish Research Council
Funding agency's reference number: 2009-04492

Topic and keywords

Research area

Geophysics (Standard för svensk indelning av forskningsämnen 2011)

Geoscientific information (INSPIRE topic categories)

Keywords

Earth science, Geological disaster, Geophysics, Research

Publications

Juhlin, Christopher, Erik Sturkell, Jan Ove R. Ebbestad, Oliver Lehnert, Anette E. S. Högström, and Guido Meinhold. 2012. “A New Interpretation of the Sedimentary Cover in the Western Siljan Ring Area, Central Sweden, Based on Seismic Data.” Tectonophysics 580 (December):88-99. https://doi.org/10.1016/j.tecto.2012.08.040.
Fulltext article
DOI: https://doi.org/10.1016/j.tecto.2012.08.040

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Published: 2023-08-16