This document provides a brief overview for access to the BDS system via this WEB interface.
The purpose of the BDS (Blacknest Data System) system is to provide storage and access to seismic data and associated information. Development of the BDS system is an on-going process adding features and working around issues in the seismic data and meta data as they arise.
The seismic data is obtained from seismic stations and arrays of stations situated at various places in the world. Each seismic station consists of one or more seismometers detecting earth movement in one or more directions. The low frequency analogue data from each seismometer is digitally sampled, at a low sample rate, and stored as a channel in a data file. The BDS system provides a core platform that is modular in design and integrates the seismic sensor data with its meta data.
Details on the BDS system is available at: https://portal.beam.ltd.uk/support/blacknest
StartDate |
The start date for the required data |
StartTime |
The start time within the StartDate for the required data |
EndDate |
The end date for the required data |
EndTime |
The end time within the EndDate for the required data |
Network |
The seismic network the data is from. The main one for this is BN for Blacknest. A blank means all networks. |
Station |
The seismic stations or arrays
for the data. If you select an array the system will return data for
all stations within that array. You can sellect multiple stations or
arrays but the system limits the overal number of channels to 100. |
Channel |
The particular channel or channels of each station. A blank means all channels available on each station. |
Source |
For each set of seismic data
obtained from a channel at a station there may be various sources.
There are different sources when different sensors, filters or
digitisers are used. Also there can be different sources due to the
path that the original data took before being stored in the BDS system.
Some data may have been converted to GCF format and sent over a
satelite link while it may have also been stored in another format on
tapes or CD's etc. |
DataFormat |
The format you would like the
data in. The BDS system can convert the format of the seismic data into
any format supported by the BDS data converters. |
MetaDataFormat |
Then downloading Meta data only, this is the format you would like this information in. |