Magnetic monitoring in Saguaro National Park

Fact Sheet 2017-3035
By: , and 



On a sandy, arid plain, near the Rincon Moun­tain Visitor Center of Saguaro National Park, tucked in among brittlebush, creosote, and other hardy desert plants, is an unusual type of observatory—a small unmanned station that is used for monitor­ing the Earth’s variable magnetic field. Named for the nearby city of Tucson, Arizona, the observatory is 1 of 14 that the Geomagnetism Program of the U.S. Geological Survey operates at various locations across the United States and Ter­ritories.

Data from USGS magnetic observatories, including the Tucson observatory, as well as observatories operated by institutions in other countries, record a variety of signals related to a wide diversity of physical phenomena in the Earth’s interior and its surrounding outer-space environment. The data are used for geomagnetic mapping and surveying, for fundamental scientific research, and for assessment of magnetic storms, which can be hazardous for the activities and infra­structure of our modern, technologically based society. The U.S. Geological Survey observatory service is an integral part of a U.S. national project for monitoring and assessing space weather hazards.

Suggested Citation

Love, J.J., Finn, C.A., Gamez Valdez, Y.C., Swann, Don, 2017, Magnetic monitoring in Saguaro National Park: U.S. Geological Survey Fact Sheet 2017–3035, 2 p.,

ISSN: 2327-6932 (online)

ISSN: 2327-6916 (print)

Study Area

Table of Contents

  • History
  • Data
  • References
Publication type Report
Publication Subtype USGS Numbered Series
Title Magnetic monitoring in Saguaro National Park
Series title Fact Sheet
Series number 2017-3035
DOI 10.3133/fs20173035
Year Published 2017
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Geologic Hazards Science Center
Description 2 p.
Country United States
State Arizona
Other Geospatial Saguaro National Park
Online Only (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details