Information Technology Reference
In-Depth Information
Table 13.1
Steps for each event
Protocol/event
Step to record
Explanation
Ingestion of raw data files in
varying formats
Source of dataset
Capture evidence that this is
indeed the source
Checksum information
Capture checksum
information about the
received data file
Archivist name and details
Record the identity and
capture credentials of the
archivist
Transformation of received data
files into IIWG format
Format transformation
Capture details of the
transformation, the
software used, the
environment and who
performed it
Detail transformational
information properties
Capture details of
transformational
information properties
checked, how was the
transformation validated
Final validation and archival of
IIWG file within WDC
Details of validation
process
Capture details of the
validation process
performed, how was the
file validated
Details of transfer to
storage
Capture details about the
transfer of IIWG to
storage
13.7.6.2 Case Study 2 EISCAT Recording the Processing Chain
The European Incoherent Scatter (EISCAT) association was founded in 1975 by
the research councils of Norway, Sweden, Finland, France, Germany and the
United Kingdom to build and operate a research radar system in the auroral regions
of Scandinavia; Japan joined the association in 1996. The technique measures the
scattering of high power radio waves at UHF and VHF frequencies by the iono-
sphere. The returned signal allows routine measurement of Electron Density, Ion
Velocity and Electron and Ion temperatures from about 80 km to over 1,000 km
with height resolution down to a few hundred meters. The incoherent scatter tech-
nique provides the widest ranging measurements of the ionosphere over an extensive
height range. The mainland UHF system is unique in the world having the abil-
ity to produce true three dimensional velocity data and to make observations of
non-maxwellian plasma effects.
The raw data from the radar is both large and almost impossible to understand
without the comprehensive analysis system but it has been noted that the analysed
results lack a clear audit trail to ensure their veracity, this case study aims to address
this issue by partly recording the processing and audit chain. The raw and processed
data from the receivers are initially stored by the archive held at Kiruna, Sweden.
