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How to use MAGDAS Data for Science -- STP Phenomena in MAGDAS Data -
S. Abe, T. Uozumi, A. Ikeda, Y. Yamazaki, G. Maeda and K. Yumoto: SERC, Kyushu University. MAGDAS Session in ISWI UN/NASA/JAXA Workshop, Helwan, Egypt 6 – 10 November 2010
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
Outline Our presentation has three main topics. Data transmission system of MAGDAS Introduction to Africa MAGDAS data DVD Examples of STP phenomena which can see by using MAGDAS data ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
About MAGDAS network MAGDAS is a world-wide ground magnetometer network. It mainly consist of three magnetometer chains: 210MM, Magnetic Equator, and 96 MM chain along the Africa region. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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About MAGDAS magnetometer
Former presentations show the MAGDAS magnetometer system detail. Thus, this presentation snips the detail of magnetometer, and summarized the MAGDAS magnetometer. Features of MAGDAS: Send 3axes magnetometer data in real time to SERC. (2) Record data on data cards at all times (even during power failures). (3) Get the precise time and location from GPS. (4) The sampling rate is one second. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Example. MAGDAS-II component
Important device on this presentation Data Server in Japan MAGDAS-II mainly consists of these units: 1. Magnetometer unit (Sensor and Amplifier) 2. Data processing unit 2-1. Data logging unit (including A/D and GPS) 2-2. Data transfer unit 3. Battery backup unit 4. Data Server GPS Oversea station Battery backup Unit ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Schematic diagram of MAGDAS data flow
・ ・ ・ Raw Data Raw Data Raw Data SERC Acquisition Server (Server for Incoming Field Data) Data Check & Correct Storage Data FTP access Username, Password Public Access Server (Server for Providing Data) Get plot user http access, no password Get Data CD/DVD user user ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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MAGDAS near real time plot
The side panel shows our website for MAGDAS-II stations. All people can see near real time ordinary and diff plot of all the MAGDAS-II stations. These plots are supported by your ceaseless maintenance to magnetometer and network. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Network connection between oversea stations and SERC
There are many differences and difficulties to construct the network connection between each oversea station and SERC. The difference of network system at each country. For example, Japan is almost covered by broadband network using ADSL or FTTH. However, data transmission by using cell-phone is very expensive and out of global standard (called Galápagos syndrome). ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Examples of network connection between oversea stations and SERC
Direct connection by using broadband network SSH protocol is used on background This is the standard network connection model between oversea and SERC ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Examples of network connection between oversea stations and SERC
Direct connection by using cellphone network SSH protocol is used on background ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Examples of network connection between oversea stations and SERC
Because of several reasons, MAGDAS cannot send data directly or cannot use SSH protocol SERC access FTP server constructed in oversea stations ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Global Internet Map 2009 from CISCO
EUROPE North America Asia Pacific Africa South America ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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About MAGDAS Africa data DVD
Geomagnetic data collected by the above methods are released from SERC after some processes for scientific usage (for example, noise reduction, temperature drift correction, and so on). SERC announced that we have released Africa MAGDAS data collection as DVD media. FTP server is available. FTP site: ftp://magdas.serc.kyushu-u.ac.jp/ Username:afrdvd Password:05AfrM21o ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Contents of MAGDAS Africa DVD
The following panel shows a tree diagram of the contents of Africa DVD media. Documents IAGA2002 MAGDAS1 QLPlot DataFormat MAGDAS_15_papers References SERC_Data_Release_MAGDAS.pdf ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Contents of MAGDAS Africa DVD
The following panel shows a tree diagram of the contents of Africa DVD media. Documents IAGA2002 MAGDAS1 QLPlot Station Code Min Year(YYYY) ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Contents of MAGDAS Africa DVD
The following panel shows a tree diagram of the contents of Africa DVD media. Documents IAGA2002 MAGDAS1 QLPlot Station Code Min Year(YYYY) ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Contents of MAGDAS Africa DVD
The following panel shows a tree diagram of the contents of Africa DVD media. Documents IAGA2002 MAGDAS1 QLPlot Station Code ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
New Africa DVD In 2010, our teams went to Africa stations and maintained the magnetometers and networks. In addition, we got some of SD and CF media at each station. We are processing these media, and updating Africa DVD contents. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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STP phenomena in MAGDAS data
In last section, we will present some examples of STP phenomena which can know from MAGDAS data. We can see many Solar Terrestrial Physics (STP) phenomena by analyzing MAGDAS data. All of them are very important to understand the complexity of Sun-Earth system. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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STP phenomena: SSC and SFE
There are some sudden perturbations in the northward component of the ground magnetic fields. Sudden perturbation occurred with solar flares is called Solar Flare Effect (SFE). The abrupt increase or decrease marked the beginning of a geomagnetic storm is called Storm Sudden Commencement (SSC). Side panel shows X-ray plot observed at GOES satellte and SFE observed at MAGDAS stations. Yamazaki et al., 2009 ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
STP phenomena: DP2 1 Apr. 2007 12 20 UT 18 16 14 1 Apr Solar Wind (OMNI) Bz(nT) Ey(mV/m) Vsw(km/s) Psw (nPa) 10 -10 -4 4 600 520 2 H comp. 20nT/div ANC daytime SMA KUJ DAV DP2 is caused by the penetration from polar region. Its origin comes from the solar wind. We can observe this phenomenon by MAGDAS magnetometer and FM-CW radar Nighttime 0.5 mV/m /div PTK Ey(ion.) 12 14 16 18 20 UT Ikeda et al., SGEPSS 2010 meeting ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
STP phenomena: Pc3, 4 and 5 Pc3,4,5 and Pi2(focused later) are kinds of Ultra Low Frequency waves in geomagnetic pulsations. These are categorized by wave form (Continuous or Irregular) and period. Type Period(sec) Frequency(mHz) ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
STP phenomena: Pc3, 4 and 5 Applying the bandpass filter to MAGDAS data, you can see Pc pulsations clearly. KRT AAB NAB DES LSK MPT Oct 10, :00-09:00 UT Oct 10, :00-09:00 UT Takla et al., Preliminary Results of Latitudinal Dependence of Pc3-4 Amplitudes at 96 MM Stations in Africa ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
STP phenomena: Pc3, 4 and 5 Applying the bandpass filter to our MAGDAS data, you can see Pc pulsations clearly. KRT AAB NAB DES LSK MPT Oct 10, :00-10:00 UT Oct 10, :00-10:00 UT Takla et al., Preliminary Results of Latitudinal Dependence of Pc3-4 Amplitudes at 96 MM Stations in Africa ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
STP phenomena: Pc3, 4 and 5 Dynamic spectrum plot helps us to understand Pc3,4 and 5 visually. KRT LSK NAB MPT DES DRB Oct 4, :00-10:00 UT Oct 4, :00-10:00 UT Takla et al., Preliminary Results of Latitudinal Dependence of Pc3-4 Amplitudes at 96 MM Stations in Africa ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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STP phenomena: Geomagnetic storm
Geomagnetic storm is a maximum scale phenomenon in the Solar-Terrestrial Physics. Due to a coronal mass ejections (CME), corotating interaction region (CIR), or some effects, Earth's magnetosphere is disturbed. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Geomagnetic Storm SSC 2009/09/28 自然と科学 第1回@福岡工業大学
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STP phenomena: substorm and Pi2
Substorm is one of magnetospheric disturbances, and exciting topic in Solar-Terrestrial Physics research. Pi 2 pulsations and aurora breakups are simultaneously occurred during substorm. 970127 1600 Pi 2 Onsets One-to-one correspondence between aurora breakup and Pi 2 Onset 2009/12/07 自然と科学 第9回@福岡工業大学 15:00 17:00UT
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ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
Summary In this presentation, we introduced near real-time data transfer systems from oversea stations. MAGDAS is challenging and exciting project. We have released Africa MAGDAS data collection DVD. We introduced the contents of this media for your help. We presented some examples of STP phenomena which can know from MAGDAS data. ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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Thank you for your attention!
That’s all! ISWI UN/NASA/JAXA Workshop, Helwan, Egypt
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