Accession Number:

AD1013931

Title:

Dual Hemisphere Investigations of Ionospheric Irregularities that Disrupt Radio Communications and Navigation

Descriptive Note:

Technical Report,01 Jan 2013,31 Dec 2015

Corporate Author:

THE TRUSTEES OF BOSTON UNIVERSITY BOSTON United States

Personal Author(s):

• Mendillo,Michael

Report Date:

2016-07-25

Pagination or Media Count:

9.0

Abstract:

This grant provided resources to study 1 ionospheric disturbances that cause severe disruptions of radio communications and navigational systems crucial to Department of Defense programs, and 2 tsunami-generated ionospheric signatures of waves that can be used to study both upward and horizontal ocean-atmosphere coupling. Our primary observational technique is optical-one that provides broad coverage of upper atmosphere structures and disturbances. Using instrumentation provided by the Defense University Research Instrumentation Program DURlP we conducted our studies from several sites in North and South America. Each site was equipped with a Boston University state-of-the-art optical instrument called an All-Sky-magier ASI, meaning that it records atmospheric emissions using a 180 field -of-view achieved by a fish -eye lens. Moreover, we located these instruments at sites that share a common geomagnetic field line- called conjugate points. For example, the ASI at the Arecibo Radio Observatory in Puerto Rico has its geomagnetic conjugate point in Mercedes Argentina, while our ASI at the higher latitude Millstone HillHaystack Observatory MA has its conjugate point covered by an ASI in Rothera Antartica.

Descriptors:

• IONOSPHERIC DISTURBANCES
• COMMUNICATION AND RADIO SYSTEMS
• NAVIGATION
• latitude
• geophysics
• WEATHER
• GEOMAGNETISM
• gravity waves
• earthquakes
• TSUNAMIS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE