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Sudden Ionosphere Disturbance

Sudden Ionosphere Disturbance. Stanford Solar Center http://solar-center.stanford.edu/sid.html. Version 2.0 Slides by Ray Mitchell. SID Sudden Ionosphere Disturbance. Theory of Operation. The Sun, Ionosphere, and Radio waves.

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Sudden Ionosphere Disturbance

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  1. Sudden Ionosphere Disturbance Stanford Solar Center http://solar-center.stanford.edu/sid.html Version 2.0 Slides by Ray Mitchell

  2. SIDSudden Ionosphere Disturbance Theory of Operation

  3. The Sun, Ionosphere, and Radio waves

  4. Source: http://www.cmsstudios.com/fly2k/99flights/images/ebbyjm.jpg Navy Radio Station, Jim Creek, WA“NLK” 24.8KHz Antenna Wires 200’ Towers

  5. Sound file About 24.8 KHz Amplitude (Peak-to-Peak)  Radio Signal  1 Cycle = 7.5 Miles (12 KM)  Distance traveled over time  How to make this Computation? Speed of light: c = 186,000 Miles/Sec (300,000 KM/Sec) Frequency: f = 24,800 Cycles/Sec Wave Length:  = c / f Miles (or KM) / Cycle

  6. The “SID” Shed (Reference) Tuned loop Antenna Observation Dates: (Approx) 24-Jul-03 – Present date Located in Stanford Hills next to The Wilcox Solar Observatory

  7. Research and Development…Building the SID Monitors

  8. Prototype SID Monitor & Antenna Pre-Amp DataQ Post-Amp Box Dimensions: 4”w X 10”L X 3”h 30”square, 50 turns of #26 wire Connected with RG-58 Coax Model: SID_Beta-1

  9. SID Monitor: Block Diagram Pre-Amp All frequencies Coax 24.8KHz Filter Band-pass, Only 24.8KHz (Amplitude Modulation) DC voltage Level Signal Strength = 10 bit, Analog to Digital Conversion DATAQ Computer Sample every 5 Seconds RS-232

  10. Normal 24 Hr. Day (No flares) LocalNoon Nighttime Sunset Daytime Sunrise Nighttime Time in UT

  11. Detecting Solar Flares – SID(s) SID Events! However, not all SID events are explainable. Research is needed to help answer “What are these events?”

  12. GOES-12 Weather Satellite Detecting X-Rays

  13. Connecting SID to GOES Data C5.9 M1.3 C4.5 C3.8

  14. Edited Events :Product: 20030802events.txt :Created: 2003 Aug 05 0302 UT :Date: 2003 08 02 # Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center. # Please send comments and suggestions to sec@sec.noaa.gov # # Missing data: //// # Updated every 30 minutes. # Edited Events for 2003 Aug 02 # #Event Begin Max End Obs Q Type Loc/Frq Particulars Reg# #------------------------------------------------------------------------------- 1910 + 1529 1537 1545 G12 5 XRA 1-8A B8.1 6.3E-04 0424 1910 1533 1534 1553 HOL 3 FLA S17E71 SF 0424 1920 1604 1609 1617 HOL 3 FLA S18E70 SF 0424 1930 1625 1650 1726 HOL 3 FLA S18E68 SF 0424 1930 + 1637 1642 1650 G12 5 XRA 1-8A C1.1 7.6E-04 0424 1940 + 1653 1653 1655 SAG G RBR 245 100 1950 1713 1714 1714 PAL G RBR 245 87 1960 + 1727 1736 1744 G12 5 XRA 1-8A C4.5 3.1E-03 0424 1960 1730 1734 1759 HOL 3 FLA S17E68 1F 0424 1960 1733 1733 1734 PAL G RBR 245 56 0424 1970 1839 1839 1839 PAL G RBR 245 110 1980 + 1905 1918 1925 G12 5 XRA 1-8A B7.1 7.5E-04 0424 1980 1917 1936 2005 HOL 3 FLA S17E67 SF 0424 1990 + 1930 1946 1954 G12 5 XRA 1-8A C5.9 5.9E-03 0424 2000 + 2112 2134 2140 G12 5 XRA 1-8A C3.8 3.1E-03 0424 2000 + 2115 2115 2115 PAL G RBR 245 270 0424 2000 2116 2132 2156 HOL 3 FLA S17E66 SF 0424 2020 + 2249 2256 2303 G12 5 XRA 1-8A B9.0 5.9E-04 0424 2040 + 2341 2354 0002 G12 5 XRA 1-8A M1.3 8.5E-03 0424 2040 + 2345 2351 0031 LEA 3 FLA S17E63 1F ERU 0424 http://www.sec.noaa.gov/ftpdir/indices/2003_events/20030802events.txt

  15. Sunspots (Active Regions) #Event Begin Max End Obs Q Type Loc/Frq Particulars Reg# #------------------------------------------------------------------------------- 1960 + 1727 1736 1744 G12 5 XRA 1-8A C4.5 3.1E-03 0424 1990 + 1930 1946 1954 G12 5 XRA 1-8A C5.9 5.9E-03 0424 2000 + 2112 2134 2140 G12 5 XRA 1-8A C3.8 3.1E-03 0424 2040 + 2341 2354 0002 G12 5 XRA 1-8A M1.3 8.5E-03 0424

  16. SIDSudden Ionosphere Disturbance Beta Sites

  17. San Leandro High School Observation Dates: 01-Oct-03 – 01-Dec-03 Teacher: Mr. Rick Styner Model: SID_Beta-1

  18. Chabot College Observation Dates: 25-Nov-03 – 29-Dec-03 Teacher: Mr. Timothy Dave Model: SID-Beta-0

  19. Castro Valley High School Observation Dates: 10-May-04 – ? Teacher: Mr. Sean Fottrell Model: SID_Beta-1

  20. SIDSudden Ionosphere Disturbance Next Steps

  21. Next Steps… • Build more Monitors • Printed Circuit Board Layout and Design • Assembly / Electronics: Chabot College • Software: • Computer Science students Cal. State University, Hayward • Stanford University: Data storage & analysis tools • Involve teachers to develop lessons plans • Classroom activities • Improve collaboration among the schools • Tour more schools

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