{"id":945,"date":"2017-09-09T23:28:07","date_gmt":"2017-09-09T21:28:07","guid":{"rendered":"http:\/\/tarmo.koppel.ee\/?p=945"},"modified":"2017-09-10T00:00:57","modified_gmt":"2017-09-09T22:00:57","slug":"8-09-17-erakordselt-tugev-magnettorm","status":"publish","type":"post","link":"https:\/\/tarmo.koppel.ee\/?p=945","title":{"rendered":"8.09.17 erakordselt tugev magnettorm"},"content":{"rendered":"

Sel n\u00e4dalal, 6.septembril leidis aset erakordselt tugev p\u00e4ikesetorm, millele j\u00e4rgnes 8.septembril erakordselt tugev magnettorm. <\/strong><\/p>\n

Magnettorm algas 8.septembri \u00f6\u00f6sel, kui P\u00e4ikesel toimunud purse j\u00f5udis Maani. Magnettormi tekitasid kaks X-klassi p\u00e4ikeseloidet, mis leidsit aset P\u00e4ikesel 6.septembril. X-klassi p\u00e4ikeseloide on k\u00f5ige tugevam p\u00e4ikesetormide kategooria. 6.septembri tugevaim p\u00e4ikeseloide klassifitseeriti X9.3, kusjuures viimane X9 klassi p\u00e4ikeseloide toimus 2006.a-l (X9.0).
\n<\/strong><\/p>\n

Lisaks raadiokiirguslikule tormile Maa atmosf\u00e4\u00e4ri \u00fclemistes kihtides, kaasneb loitega laetud osakeste v\u00e4ljapurse P\u00e4ikeselt. Energeetiliselt laetud plasma lendub ilmaruumi – ing.k. coronal mass ejection (CME).<\/em><\/p>\n

\"\"<\/a>Erakordselt tugeval magnettormil oli kaks k\u00f5rghetke: 8.septembri \u00f6\u00f6sel ning p\u00e4rastl\u00f5unal.<\/h5>\n

P\u00e4ikese 11-aastases ts\u00fcklis on saabumas solaarne miinimum, kuid sellised pursked\u00a0 kuuluvad toimiva t\u00e4he tegevusse ka vaiksemal perioodil. 8.septembri magnettorm oli tugevaim \u00fcle mitme aasta klassifitseerudes Kp8 (skaala Kp1-Kp9).<\/p>\n

\"\"<\/a>Nurmij\u00e4rvi magnetomeeter n\u00e4itas tugevaimat l\u00f6\u00f6ki ~750nT (keskmistatud 10min kaupa)<\/h5>\n

Tallinnale l\u00e4himal asuva Nurmij\u00e4rvi magnetomeetri salvestisest on n\u00e4ha, et aset leidis tugev l\u00f6\u00f6k magnetv\u00e4ljas ~750nanoTeslat.<\/p>\n

Nurmij\u00e4rvi graafik (ennek\u00f5ike Z telg ehk vertikaalne telg) n\u00e4itab, et k\u00f5igepealt magnetv\u00e4li tugevnes (kl 13 paiku) ja siis n\u00f5rgenes (kl 18 paiku). Kui laetud osakeste voog Maad tabab, siis see l\u00f6\u00f6k pressib magnetv\u00e4lja kokku, mis on magnetv\u00e4lja j\u00f5ujoonte tihenemine ehk magnetv\u00e4lja tugevnemine. Sellele j\u00e4rgneb m\u00f5ne tunni p\u00e4rast surve vabanemine, mis tekitab ajutise magnetv\u00e4lja h\u00f5renemise ehk magnetv\u00e4lja n\u00f5rgenemise. Seep\u00e4rast muutus ka kompassi n\u00e4it (deklinatsioon) algul \u00fchele poole ja siis teisele poole.
\nNurmij\u00e4rvi graafikul on ka n\u00e4ha, et surve Maa magnetv\u00e4ljale pole \u00fchtlane vaid selle kestel on l\u00fchemaid ja kiiremaid lisal\u00f6\u00f6ke. See kosmosetuul , mis Maa magnetosf\u00e4\u00e4ri tabab pole seega konstantne, vaid “puhanguline”.<\/p>\n

P\u00e4ikeseloited p\u00f5hjustasid 6.septembril raadiosidekatkestusi, sh navigatsiooniseadmete h\u00e4ireid. Lisaks raadiosidet kasutavatele s\u00fcsteemidele olid 8.septembri magnettormi\u00a0 t\u00f5ttu h\u00e4iritud ka tavalised kompassid. TT\u00dc Merealadeemia poolt rakendatav hoovusem\u00f5\u00f5tja Tallinna l\u00e4hedal Vahemadalal, registreeris magnettormi t\u00f5uked kompassideklinatsioonimuutustena. Arvestades et Maa magnetv\u00e4li on 51000 nT, siis ~1,5% h\u00e4lve maa magnetv\u00e4ljas tekitab magnetkompassile lisadeviatsiooni ~1,5 kraadi.<\/p>\n

\"\"<\/a>Vahemadala hoovusem\u00f5\u00f5tja magnetkompass n\u00e4itas magnettormi t\u00f5ugete ajal kompassi deklinatsiooni kuni 1,5 kraadi – ehk rahvakeeli “magnettorm pani kompassi valetama”<\/h5>\n

Allikad:
\nhttp:\/\/space.fmi.fi\/image\/realtime\/UT\/NUR\/XYZlastWEEK.html
\nhttp:\/\/services.swpc.noaa.gov\/images\/planetary-k-index.gif
\nhttp:\/\/on-line.msi.ttu.ee\/vahemadal\/<\/h4>\n","protected":false},"excerpt":{"rendered":"

Sel n\u00e4dalal, 6.septembril leidis aset erakordselt tugev p\u00e4ikesetorm, millele j\u00e4rgnes 8.septembril erakordselt tugev magnettorm. Magnettorm algas 8.septembri \u00f6\u00f6sel, kui P\u00e4ikesel toimunud purse j\u00f5udis Maani. Magnettormi tekitasid kaks X-klassi p\u00e4ikeseloidet, mis leidsit aset P\u00e4ikesel 6.septembril. X-klassi p\u00e4ikeseloide on k\u00f5ige tugevam p\u00e4ikesetormide … J\u00e4tka lugemist →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=\/wp\/v2\/posts\/945"}],"collection":[{"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=945"}],"version-history":[{"count":4,"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=\/wp\/v2\/posts\/945\/revisions"}],"predecessor-version":[{"id":952,"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=\/wp\/v2\/posts\/945\/revisions\/952"}],"wp:attachment":[{"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tarmo.koppel.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}