Magnetic Pole: Ko danda inversion iri zvinoita?

Magnetic matanda Nyika - varimowo muboka revaya geomagnetic munda nyika kuitika nokuda kufamba resimbi kuyerera yakanyungudutswa uye nickel akapoteredza nechepakati chakasimba chinoumba nokuda dzenzvimbo ari ionosphere, dzemunharaunda anomalies goko . Uye vamwe rinobva nematanda vakaziva pana izvo Geomagnetic munda pasi kurudyi dzinoita kuti pose nyika. In zvachose pane matanda maviri - kuchamhembe nokumaodzanyemba, izvo vasiri antipodal nokuda asymmetry dzesango.

Magnetic danda riri kuchamhembe hemisphere racho chaizvo riri kumaodzanyemba, nekuti Ndiyo nzvimbo munda mitsetse kuenda pasi pemvura. A "wechokwadi" North Pole ari kumaodzanyemba, uko mutsetse kubva pasi pemvura kunze.

Zvinofungirwa kuti kuvapo rinobva matanda vanhu anoziva kwenguva refu. Nechekare muna 220 BC muna China zvakaitwa mufananidzo wokutanga chinongedzo, iyo inonzi "tafura rokudenga." Chaiva chipunu chiduku kutenderera pakati mahwendefa endarira. Chaiwo Coordinates kupi kuchamhembe nokumaodzanyemba rinobva matanda Nyika, vanga ndakagadza muna thirties uye forties of XIX remakore. Muna 1831, hama Ross akasarudza kuti rwokumusoro danda riri 70 madhigirii maminitsi 5 rwokumusoro Latitude uye 96 madhigirii maminitsi 46 kumadokero Longitude. A rwezasi rinobva danda rine zvinotevera Coordinates: 75 madhigirii maminitsi rwezasi Latitude uye 132 madhigirii 20 maminitsi 20 East Longitude (hwakagadzwa muna 1841 gore). At pakutanga XXI remakore nzvimbo pfungwa idzi zvachinja yekudyidzana. The rinobva kumusoro kwenyika "akasiya" danda kubva pfungwa inotaurwa muna 1831 kusvika 1340 km uye rwezasi - kusvika 1349? Km (kubva nzvimbo muna 1841, ukuwo). The trajectory pamusoro pfungwa idzi hakusi Linear - vanogona kuita uye kudzoka chiito.

Mumakore achangopfuura, masayendisiti akacherechedza kuti misha yose rinobva matanda paNyika substantially nokukurumidza. Vamwe vanoti izvi chokuti munguva 1969-1970. yakaitika geomagnetic kusvetuka, izvo yekudyidzana akachinja parameters romunda panyika. Humwe kuchinja of nzvimbo Coordonatele yakaitwa pasi pokudzora ukapisa murwi 1978 uye 1991-1992. Uyewo, rinobva danda riri kukanganiswa zvachose mumunda simba, iyo ikawira kushoma ukoshi pamusoro rokupedzisira remakore. Panyaya iyi, pane mazano munhu zvichibvira Kudzorerwa namatanda, apo ivo vachanzi swapped, zvichikonzera vakawanda zvinoparadza uye njodzi dzinongoitika dzoga. Mumakore mamiriyoni maviri apfuura, kuchinja nematanda vachengeterwe nguva anenge 20, iyo yokupedzisira dzakawira nguva vanenge mamiriyoni 0,8. Makore akapfuura. Zvisinei, kana zvadai inotevera nguva, zvakarurama kufanoziva hakuna anogona, nekuti yapfuura zviitiko zvose zvakanga zvisiri pamutemo.

Munguva yokudzidza, muna 1993, zvinoitiswa matombo kubva pasi Pacific Ocean, kwakaonekwa kuti mushure Kuchinja remagineti kutanga anowana kunonyanyisa nokuchengeta, ipapo simba rayo riri zvishoma kuparara. Zvichida ichi ari pasi nokudenga mashandiro vamwe mutsa kuwedzera kudzivirira upenyu panyika kubva yepasi pose nemwaranzi. Pasina izvozvo, Earth wedu aizova asina upenyu, kufanana Mars, apo simba chaizvo munda, kana Venus, uko kazhinji hazvisi.