How to use the database of the Chelyabinsk bolide video records

The main menu is always located on the first row and contains the following functions:

list     reset     search     links     configuration     export     chart

List
Displays the list of videos according to the current configuration and video type selection.
The second row of the list page enables the user to select videos of certain types: Bolide, Illumination, Trail, Wave (blast, booms), Damage. This choice must be activated by clicking either the button "Any selected type (OR)" or "All selected types (AND)".
By clicking on the column headers Number, Latitude, Longitude, or Site, the videos can be sorted according to the respective column. The second click reverses the order.
By clicking on the video number, the single-video page is displayed, showing all data for that particular video.
By clicking on one of the coordinates (if available), the location of the video is shown on Google Maps in a new window.
Reset
Displays the list of all videos sorted according to the number and using default configuration, i.e. showing the following seven columns: Number, Latitude, Longitude, Site, Camera description, Video description, Primary link.
Search
Opens the search page. Here the user can select videos taken from a particular site using a site list (Select site - the numbers indicate the number of videos from each site), search for any substring in site names (Search string in site name), select cameras containing certain descriptions (Search camera description) or search according to geographical coordinates. The last option requires entering the center of search (Center of search latitude and longitude) and radius of search (Limiting distance (km)). If more options are entered, all of them are combined and only videos satisfying all criteria are returned. Note, however, that certain data (e.g. coordinates) are not available for all videos.
Links
Lists all links presented in the database, including duplicate links, in alphabetical order. More than one link can belong to one video. The video number is listed on the left.
Configuration
Allows to configure the columns to be displayed and the column separator for export (tabulator or semicolon).
There are 11 columns for selection (see below). Video number is always displayed.
The selection must be activated by clicking the OK button.
If the column "Primary link" is selected and "Duplicate and related links" column is not selected but duplicate links do exist, the primary link is followed by ">>" in the database.
Export
Exports the current list in plain text format. The exported text is displayed in new window, from where it can be saved to local disk. The column separator can be selected in configuration.
Chart
Plots the positions of localized videos in a schematic map. The videos from the current list are plotted in blue, all other videos in grey. Also the ground projection of the Chelyabinsk bolide atmospheric trajectory and its fragment F1 (green lines, according to Borovicka et al., 2013, Nature 505, 235), the position of the crater on Chebarkul lake (green circle), and several major cities (labeled grey circles) are shown.
If the size of the area containing the selected videos is larger than about 100 m, enlarged map showing only the selected (blue) videos is also generated. The enlarged area is shown by black rectangle in the overview map.

Explanation of the columns

Number: Sequential number assigned to the video by the authors.
Type: Tag of video content: B - bolide, I - illumination, T - trail, W - wave (either sonic booms or visible blast wave arrival), D - damage. Used for selection of videos according to their types. Corresponds to Video description.
Latitude and Longitude: Position from where the video was taken (in degrees North/ East).
Site: Name of the site from where the video was taken - the nearest village and /or road number.
Camera description: Type of camera. For dashboard cameras, moving/standing/stopping/starting car is distinguished.
Video description: Brief description of the content of the video.
Resolution: resolution of the video in pixels.
fps: Number of frames per second (rounded to two decimal digits)
Time of interest: Relative time of the event (bolide and/or blast wave) in the video record counted from the beginning of the record.
Primary link: Usually the first link found for one particular video record.
Duplicate and related links: Alternative links pointing to the same video or other related videos of the author of the primary link.

More detailed explanations are given in the paper [not published, yet].
All links in the database are active. Some videos, however, are no more available.
We are aware that the information provided for some videos is not complete. You can submit updates.

The single-video page

Single-video pages contain all available information for individual videos. If coordinates are known, overview chart is displayed, showing the location of video in red, among all other videos (blue). All links are given together, the primary link in red, the duplicate and related links (if any) in blue. The types of video are given at bottom.

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