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

---
identifier: "/us/cfr/t15/s950.5"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "15 CFR § 950.5 - National Geophysical and Solar-Terrestrial Data Center (NGSDC)."
title_number: 15
title_name: "Commerce and Foreign Trade"
section_number: "950.5"
section_name: "National Geophysical and Solar-Terrestrial Data Center (NGSDC)."
chapter_name: "NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE"
subchapter_number: "D"
subchapter_name: "GENERAL REGULATIONS OF THE ENVIRONMENTAL DATA SERVICE"
part_number: "950"
part_name: "ENVIRONMENTAL DATA AND INFORMATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "(5 U.S.C. 552, 553). Reorganization Plan No. 4 of 1970."
regulatory_source: "44 FR 54468, Sept. 20, 1979, unless otherwise noted."
cfr_part: "950"
---


# 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.