---
kind: "section"
citation: "15 C.F.R. § 950.5"
title: "15"
number: "950.5"
heading: "National Geophysical and Solar-Terrestrial Data Center (NGSDC)."
url: "https://uscodex.org/cfr/15/950.5"
---

# §950.5. National Geophysical and Solar-Terrestrial Data Center (NGSDC).


The National Geophysical and Solar-Terrestrial Data Center acquires, processes, archives, analyzes, and disseminates solid Earth and marine geophysical data as well as ionospheric, solar, and other space environment data; develops analytical, climatological, and descriptive products to meet user requirements; and provides facilities for World Data Center-A (Solid-Earth Geophysics, Solar Terrestrial Physics, and Glaciology).

- (a) **Geophysical and solar-terrestrial data available from NGSDC include—**
  - (1) **Marine geology and geophysics.** Bathymetric measurement; seismic reflection profiles; gravimetric measurements; geomagnetic total field measurements; and geological data, including data on heat flow, cores, samples, and sediments.
  - (2) **Solar-Terrestrial physics.** Ionosphere data, including ionograms, frequency plots, riometer and field-strength strip charts, and tabulations; solar activity data; geomagnetic variation data, including magnetograms; auroral data; cosmic ray data; and airglow data.
  - (3) **Seismology.** Seismograms; accelerograms; digitized strong-motion accelerograms; earthquake data list (events since January 1900); earthquake data service with updates on a monthly basis.
  - (4) **Geomagnetic main field.** Magnetic survey data and secular-change data tables.
- (b) **Queries should be addressed to—** National Geophysical and Solar-Terrestrial Data Center, National Oceanic and Atmospheric Administration, Boulder, CO 80303, tel. 303-499-1000, ext. 6215.

## Notes

### Authority

Authority: (5 U.S.C. 552, 553). Reorganization Plan No. 4 of 1970.

### Source

Source: 44 FR 54468, Sept. 20, 1979, unless otherwise noted.