Igqityelwe ukuhlaziya ngoMeyi 14, 2021 ngu URoger Kaufman
NASA "Ihlabathi loTshintsho": iNtaba iSt. Helens - iminyaka engama-30 kamva / iminyaka engama-30 kamva
Intaba-mlilo ngamehlo esathelayithi -
Kanye kwiminyaka engama-30 eyadlulayo, iMount St. Helens yagqabhuka emva kokubonisa iimpawu zokuqala zobomi ngenyikima ebuthathaka kungekudala ngaphambili.
Imagma enyukayo yayiyigqume intaba kwicala layo elingasentla.
NgoMeyi 18, 1980, inyikima enkulu yantlitha loo ntaba, yaza yabangela inyikima enkulu.
Uxinzelelo kwi-magma ekhulayo yancitshiswa ngokukhawuleza, kwaye iigesi ezinyibilikileyo kunye nomphunga wamanzi zasinda kugqabhuko-dubulo olukhulu.
Ukuthetha nje, oku kusebenza njengebhotile ye-champagne oyishukumisa ngamandla ngaphambi kokuvula.
Okunye yimbali. Ngokuqhambuka kwe-18 kaMeyi, 1980, i imbali kodwa akukapheli.
Intaba-mlilo isaqhuma. Oko kukwabonisa yokuzonwabisa ye USGS, apho uDave Schumaker waziqhelanisa notshintsho lwelava dome kwi crater.
Le vidiyo imfutshane ibonisa imiphumo eyintlekele yogqabhuko-dubulo ... kunye nokuvuselelwa okumangalisayo kwezinto eziphilayo ezingqongileyo - ngamehlo Iisathelayithi zeLandsat.
Iisathelayithi zeLandsat.
Ividiyo – Intaba-mlilo ngamehlo esathelayithi
Ividiyo kunye nenkcazo nge: http://facebook.com/WissensMagazin / http://facebook.com/ScienceReason
Ziziphi Indawo-Iisathelayithi
I-Wikipedia ibonelela ngale ngcaciso ilandelayo yamagama
Die Indawo-Iisathelayithi luthotho lwe-civil iisathelayithi zokujonga umhlaba le NASA ukuba imvakalelo ekude umphezulu welizwekazi lomhlaba kunye nemimandla yonxweme.
Zisetyenziswa ikakhulu ukwenza imephu yemithombo yendalo kunye nokurekhoda utshintsho olubangelwa yinkqubo yendalo kunye nemisebenzi yabantu.
Ukususela ngo-1972, ii-satellites ezisibhozo (kubandakanywa nesiqalo sobuxoki) solu chungechunge ziye zasungulwa, zahlulwe zibe zichungechunge ezine.
Iqonga lokuvalela kude lisebenzisa izinzwa ezahlukeneyo ukurekhoda okubizwa ngokuba yidatha yokuva okude.
Inkqubo ye-Landsat iqalela kwimishini yokufika kwenyanga ye-Apollo ngeminyaka yoo-1960, xa imifanekiso yomphezulu woMhlaba yathinjwa okokuqala emajukujukwini.
Ngowe-1965, ngelo xesha owayengumalathisi weUnited States Geological Survey (USGS), uWilliam Pecora, wenza isiphakamiso senkqubo yesathelayithi ekwazi ukubona umntu ekude. impilo ukufumana kwakhona idatha malunga nobutyebi bendalo bomhlaba.
Kwangalo nyaka, i-NASA yaqala i-methodical ye-remote ye-remote ye-surface yoMhlaba isebenzisa izixhobo ezibekwe kwinqwelomoya.
Ngo-1970, iNASA ekugqibeleni yafumana imvume yokwakha isathelayithi. I-Landsat 1 yaphehlelelwa kwiminyaka nje emibini kamva kwaye ukuvalelwa kude kunokuqalisa.
