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Fig. 13.10 Authenticity Tool-summary
a quick and clear indication of what evidence is missing and an indication of the
strength of the captured evidence against what was expected.
13.7.6 Applying the Tool to Scientific Data Case Studies
13.7.6.1 Case Study 1 Ionosonde Raw Data Archival
This case study is based on World Data Centre (WDC) archived data held at
Rutherford Appleton Laboratory, STFC and focuses on the long term archival of
Ionosonde scientific research data.
The World Data Centre (WDC), established by the United States, Europe, Russia,
and Japan, now includes 52 Centres in 12 countries shown in Fig. 13.11 . Its holdings
include a wide range of solar, geophysical, environmental, and human-related data.
The WDC for Solar-Terrestrial Physics based at the Rutherford Appleton laboratory
holds Ionospheric data comprising vertical soundings from over 300 stations, mostly
from 1957 onwards, though some stations have data going back to the 1930s.
Ionospheric research is performed using Ionosonde radar instruments, these
“Vertical Incidence” radars measure the time of flight of a radio signal swept through
a range of frequencies (1-30 MHz) and reflected from the ionised layers of the upper
atmosphere (90-800 km) as an “ionogram”. The measurements are analysed to give
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