I-Geomagnetism

Amandla kazibuthe omhlaba

Iplanethi yethu inamandla kazibuthe enza imisebenzi ehlukahlukene yokuvikela emisebeni yelanga ye-ultraviolet. Isayensi efunda ngemvelaphi, izakhiwo kanye nokwehluka kwensimu kazibuthe yalomhlaba ibizwa geomagnetism. Kulokhu okuthunyelwe sizokhuluma nge-geomagnetism nazo zonke izici zayo.

Uma ufuna ukwazi kabanzi nge-geomagnetism, qhubeka ufunde.

Yini i-geomagnetism

Amandla kazibuthe omhlaba

Iplanethi yethu inamandla kazibuthe angabonwa kusuka kwelinye iphuzu futhi inemisuka emibili: eyodwa yangaphakathi neyodwa yangaphandle. I-Geomagnetism yisayensi ebhekele ukutadisha imvelaphi, izakhiwo namaholide ale nsimu kazibuthe yalomhlaba. Izigxobo zikamagnetic yilezo ezitholakala ezindaweni lapho i-axis yedipole inqamula khona ebusweni bomhlaba. I-equator kazibuthe yindiza ebheke ngqo kule-eksisi. Kuyinkambu yomthombo wangaphakathi futhi akuhlali njalo kuyunifomu yami. Njengoba isikhathi siqhubeka, sibona ukwehluka okusheshayo okwenzeka ngezikhathi ezithile, okubaluleke kakhulu ukuthi kuyahlukahluka ngesikhathi samahora angama-24. Lokhu kwehluka kwaziwa njengokuhlukahluka komhlaba.

Amandla kazibuthe avela kwangaphandle abangelwa ikakhulu umsebenzi welanga ku-ionosphere naku-magnetosphere. Kunokunye ukukhishwa kwesikhashana njengokuhluka kwenyanga, ukwahluka konyaka nokwehluka okungakahlukanisi nonyaka. Kukhona nokuhlukahluka okusheshayo okuvela kwimvelaphi yangaphandle njengokushaywa ngamandla kazibuthe, amatheku, izivunguvungu zemagnethi kanye nemiphumela ye-chromospheric.

Izici eziyinhloko

i-geomagnetism yasemhlabeni

Uma sikhuluma ngensimu yomhlaba ye-geomagnetic siyabona ukuthi isici esiyinhloko ukuthi yidipolar. Lokhu kusho ukuthi inezinti ezimbili. Ngakolunye uhlangothi sinesigxobo esisenyakatho kanti ngakolunye uhlangothi isigxobo esiseningizimu. Zombili izigxobo ziyafana. Kunjengokungathi ukuphela kwemazibuthe. Ngenxa yale nsimu kazibuthe, amakhampasi ayasebenza. Le nsimu kazibuthe ibuthakathaka ebusweni beplanethi, ngakho-ke amakhampasi enziwa ngokufaka uzibuthe ongasindi kuyo.

Ensimini kazibuthe, kukhiqizwa imigqa engokomfanekiso egxile kakhulu ezigxotsheni. Ipali kazibuthe elisenyakatho yisigxobo esiseningizimu sensimu ye-geomagnetic, kuyilapho i-geomagnetic south pole iyinsika yasenyakatho eyaziwa kakhulu.

Ukusinikeza umbono, kunjengokungathi iplanethi yethu ibinomazibuthe omkhulu ngaphakathi kwayo neziphetho zayo zikhomba ezigxotsheni. Ukuqondiswa kwale magnet okucatshangelwayo akuqondile ngokuphelele. Kusukela ezinhlangothini zesikhungo, uzothola ukuthi ibha ishiyiwe kancane. Lokhu yilokho okwaziwa njengokuncipha kwe-geomagnetic. Umehluko phakathi kwendawo esenyakatho nendawo ye-geomagnetic yilokho okukhonjiswa ikhampasi. Luhlobo lwe-engeli olwehluka kuye ngesimo esikuso nesimo sezulu.

Njengoba sishilo ngaphambili, amandla kazibuthe woMhlaba ayashintsha ngokuhamba kweminyaka. Njengamanje, i-geomagnetism icwaninga ukuthi amandla kazibuthe womhlaba athambekele ku-engeli yama-degree angama-10 maqondana ne-axis yokujikeleza kweplanethi. Siyakhumbula ukuthi i-axis yokujikeleza kweplanethi inokuthambekela kwama-23 degrees.

Le nsimu kazibuthe isuka ngaphakathi kweplanethi iye emkhathini. Ngaphandle kwesikhala sangaphandle yilapho ihlangana khona ngibize umoya welanga. Umoya welanga yilokho okubizwa ngokuhamba kwezinhlayiya ezikhishwa elangeni futhi ezikhokhiswa ngama-electron, ama-proton nezinhlayiya ze-alpha.

I-Geomagnetism eNational Geographic Institute

I-Geomagnetism

Insizakalo ehlola i-geomagnetism inomsebenzi omkhulu wokutadisha nokukala amandla kazibuthe womhlaba ngaphakathi kwendawo ngayinye yezwe. Ukwenza lokhu, yiba nezindawo zokubuka ze-geomagnetic ezisetshenziselwa ukuqopha ngokuqhubekayo zonke izinto eziguqukayo ezisebenza kumandla kazibuthe. Imininingwane itholakala ezikhungweni zokubuka ezahlukahlukene futhi icutshungulwa ukukhiqiza izincwadi zonyaka ze-geomagnetic.

Izilinganiso zenziwa eziteshini eziphindayo futhi ukucindezelwa kwenziwa kaningi ezindaweni ezibizwa ngemephu. Amanani ahlukahlukene angatholwa ukuqhathanisa phakathi kwamaphoyinti athile nenye emhlabeni. Masingakhohlwa ukuthi amandla kazibuthe woMhlaba awenzi ngokulingana kuzo zonke izinhlangothi. Lokhu kusho ukuthi uhlobo lwe-cartography kufanele lucaciswe ezingeni lomhlaba ukuze kutholakale okuguquguqukayo okusebenza ekushintsheni kwezingxenye zomhlaba kazibuthe womhlaba.

Kunezindawo ezithile emhlabeni lapho imidwebo yemidwebo engenziwanga khona. Isibonelo, lokhu kwenzeka eCanary Islands. Lokhu kungenxa yokuthi kulezi ziqhingi kunethonya elinamandla lemvelo yazo yentaba-mlilo eyenza ukwenza imephu kulezi zikala kungafinyeleleki. Imininingwane etholwe kulezi zikhungo zokubheka komhlaba ezisetshenziselwa ukwenziwa kwemisebenzi ehlukahlukene yocwaningo kanye nokusebenzisana nezinye izinhlangano zomhlaba wonke.

Izimbangela ze-geomagnetism

Umsuka we-geomagnetism ungaphansi koMhlaba. Njengoba sesivele sazi, iplanethi yethu ineziningi izingqimba ezingaphakathi. Ososayensi bacabanga ukuthi ingqikithi yangaphakathi yenziwa ngensimbi eqinile futhi izungezwe uhlobo lwensimbi eshisa kakhulu. Ngoba ukugeleza kwensimbi kudala imisinga kagesi, amandla kazibuthe akhiqizwa.

Ngoba iplanethi yethu nayo inokunyakaza okujikelezayo, iba neqhaza kulokhu kushisa okukwazi ukuphuma kusuka emgodini kuya kwezinye izingxenye zangaphakathi. Amandla kazibuthe weplanethi akhiwe ngamagnetic magnetic abekwe phezulu emithonjeni eminingana. Omunye umsuka ungaphakathi kanti omunye ungaphandle. Umsuka wangaphakathi ubhekele ngaphezu kuka-90% wensimu kazibuthe. Lo msuka wangaphakathi ayizinzile kepha iyahluka ngokuhamba kwesikhathi. Ukuhluka emkhakheni kazibuthe womhlaba kwenzeka esikhathini eside kakhulu futhi kudinga ukubuyekezwa kwamamodeli okufundayo.

Njengoba ukwazi ukubona, i-geomagnetism yisayensi ezama ukucwaninga ngokuziphendukela kwemvelo, izici nezinguquko ezenzeka emhlabeni wethu maqondana namandla kazibuthe womhlaba.

Ngiyethemba ukuthi ngalolu lwazi ungafunda kabanzi nge-geomagnetism.


Amazwana, shiya okwakho

Shiya umbono wakho

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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.

  1.   ULuisa benavides kusho

    Ngiyabonga ngemininingwane ebaluleke kakhulu ngiyithande kakhulu ngoba ngifunda lezi zimo okwamanje futhi bezisiza kakhulu.