1 / 21

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.

aure
Download Presentation

Sudden Ionosphere Disturbance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related