Geomagnetism
Geomagnetism on TerraPulse is organized into three dexes tracking Earth's magnetic field as it is measured on the ground: the observatories that record it, and the two indices that summarize how disturbed it is. Every value is a reading from a real magnetometer. No estimates, no forecasts.
🧭 Records held
~310
🗂️ Dexes
3
📡 Provenance
3 networks
🌍 Family
Location + Year
The dexes
The data lives across three dexes — one for the stations, two for the derived indices. Counts are live and grow with every fetch:
| Dex | Holds | Records |
|---|---|---|
magnetic_observatory | Ground magnetic observatories, one slot per station | 154 |
kp_index | The Kp planetary geomagnetic index, by year | 95 |
geomagnetic_dst | The Dst disturbance index, by year | 64 |
Provenance
Every record carries a direct line back to the network that measured it:
- Observatories come from INTERMAGNET, the global consortium of 154 magnetic observatories that meet a common measurement standard.
- Dst is the ring-current disturbance index — a measure, in nanotesla, of how much the horizontal field is depressed during a storm.
- Kp is the planetary activity index (0–9) maintained by GFZ Potsdam in Germany.
What's in a record
- Station identity — IAGA code, name, and operating institution (observatory dex)
- Location — latitude, longitude, and elevation (observatory dex)
- Index value — Dst in nanotesla, or Kp on the 0–9 scale (index dexes)
- Time — the year the reading belongs to
- Disturbance level — quiet, unsettled, or storm classification for the index dexes