Tim Froehlig - PowerPoint PPT Presentation
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Tim Froehlig
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The Earth s Magnetosphere & Solar Wind Tim Froehlig & Bevan Gerber ... also varies SoHO Solar and Heliospheric Observatory Joint ESA/NASA project Launched Dec ... – PowerPoint PPT presentation
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Title: Tim Froehlig
1
The Earths Magnetosphere Solar Wind
- Tim Froehlig Bevan Gerber-Siff
- Thursday, July 22, 2004
2
What Were Gonna Say
- Solar wind
- Magnetosphere
- Interactions between the 2 phenomena
- Dismal experiment failure
- Aurora borealis
What are they?
3
Solar Wind
- The Sun is constantly spraying stuff
- Speed varies (300-800 km/s)
- Particle Density (amount of stuff) also varies
4
SoHO
- Solar and Heliospheric Observatory
- Joint ESA/NASA project
- Launched Dec 2, 1995
- Lies 1.5 million km from Earth
- A bunch of instruments pointed at the Sun
5
Magnetosphere
- The Earth is a large magnet
- Has a magnetosphere (field lines)
- Shields us from stuff
6
Our Dismal Failure
- Tried to make instrument to monitor magnetosphere
- In Tims dorm room on 4th floor
- Excessive vibration pollution
7
In Retrospect
- Couldve isolated instruments more
- More time to take data
- More distance between dot and magnet
- Farther from potential electromagnetic fields
8
HAARP and Other Magnetometers
- Used data from a series of magnetometers in
Alaska and Northern Canada - More accurate than we possibly couldve been
- Many crippling conditions found in UCSC are not
present
9
What Does This Have to do With Anything?!
- Solar wind constantly warps Earths magnetosphere
- Causes field line directions and field strength
to vary - Variation is measurable
- Solar wind takes 3 days to reach Earth
10
Data Plots!
11
July 15, 2004
12
Data Plots!
July 15, 2004
13
Aurora Borealis
- Occurs near poles (weak field lines)
- Caused by solar wind hitting upper atmosphere
- Light up sky
- Without magnetosphere entire sky on sunny side
would light up (but wed all die)
14
The Day the Solar Wind Disappeared
- May 10-12, 1999
- Solar Wind stopped?
- 98 less dense than normal
- ½ normal speed
- Coronal electrons reached Earth
- Über-Aurora Borealis (x-ray spectrum)
- Magnetosphere expanded to 5x normal
15
Have You Been Paying Attention?
- From the ashes of disaster Failed experiment
lead to interesting research - Lasers are FUN!
- What we said
- -Magnetosphere
- -Solar Wind
- -Correlation
- -Our Experiment sucked
- -Aurora Borealis is COOL
