Vatsvagiri veWashington State University vachatsvaga anopfuura makore makumi maviri emifananidzo kuti vadzidze kana nzira yekurima yekudyara kaviri iri kuwedzera mudunhu.
Vachishandisa $100,000 yerubatsiro kubva kuNASA Jet Propulsion Lab's Western Water Applications Office, Washington State University (WSU) masayendisiti achashandisa muchina kudzidza kudzidza mifananidzo yesatellite mukuyedza kudzidza kana shanduko yemamiriro ekunze uye mwaka wekurima wakareba zvichibvumira varimi kurima zvirimwa zviviri. mumwaka mumwe mumunda mumwe chete.
Chirongwa cheNASA's Landsat chinotora nekuchengeta mafoto ePasi pese mazuva gumi nematanhatu. Nokuda kwechipo chitsva ichi, Michael Brady, anobva kuWSU's School of Economic Sciences, uye Kirti Rajagopalan, Dhipatimendi reBiological Systems Engineering, vachashandisa mifananidzo yepakati nekumabvazuva kweWashington kutsvaga zviratidzo zvekuwedzera kwekurima kaviri. Mingliang Liu naClaudio Stockle vanobva kuWSU naPerry Beale vanobva kuWashington Department of Agriculture vanoshandira pamwe. Iri basa riri kuvaka kubva kumari yembeu kubva kuHurumende yeWashington Water Research Center.
"Mumakore makumi mashanu apfuura kana kupfuura, mwaka wekurima wekurima wekudiridza muWashington wakawedzera nemavhiki maviri kusvika matatu," akadaro Brady. “Nemwaka wekurima wakareba, zviri nyore kuti varimi vakwanise kudyara, kurima nekukohwa mbesa mbiri pagore.”
Iko kuwedzera kwekugadzirwa kunoda mvura yakawanda, ndiko kwakabva pfungwa yechidzidzo ichi. Hofisi yeWashington State Department of Ecology yeColumbia River yaida kuziva kana kurima kaviri kuri kuwedzera kukurumbira nekuti zvinozokanganisa huwandu hwemvura iripo yekurima.
“Kurima kaviri kunoshandisa mvura yakawanda kudarika kurima nekukohwa goho rimwe chete,” akadaro Brady. “Asi hapasati pave neimwe nzira yekuona kuti vangani varimi vari kurima kaviri iko zvino, ndoda kuti vawedzere sei.”
Ndipo panopinda mifananidzo yeNASA yesetiraiti. Vachishandisa muchina kudzidza, vaongorori vanotarisa mapikicha eminda yega yega voyera kuti yakasvibira sei.
Pamufananidzo wesatellite, munda unotanga mwaka wekukura ukaita shava uye zvishoma nezvishoma uchisvibira, wobva waita shava zvakare, zvichiteverwa nerimwe denderedzwa rekuwedzera kusvibira kungangoita kurimwa kaviri. Munda mumwe wakarimwa waingoratidza kutenderera kumwe chete kwekuwedzera kwegirinhi ruvara, uchiteverwa nebrown kusvika mwaka unotevera, akadaro Brady.
"Hapana nzira yekuti munhu, kana vanhu gumi nevaviri, vatarise mafoto ese eminda yese makore anopfuura makumi maviri," akadaro Brady. "Asi tichishandisa kudzidza muchina, tinogona kuona kuti kurima kaviri kwakawedzera sei muminda yemunhu mumakumi maviri emakore."
Chinangwa ndechekushandisa makore makumi maviri apfuura kufanotaura kuti ingani zvirimwa zvakapetwa kaviri zvichawedzera mumakore gumi anotevera kana kupfuura. Vatsvagiri vanozotarisawo data rakafanana rezvikamu zveCalifornia neArizona, izvo zvagara zvine zvirimwa zvakapetwa kaviri nekuda kwemwaka wekukura.
"Sezvatinotanga kuve nemamiriro ekunze akafanana nezvikamu zveCalifornia, tinogona kuona kugadzirwa kwechikafu kuchichinja kune zvakaitwa munzvimbo idzodzo," akadaro Brady.
Izvi zvinogona kukanganisa zvakanyanya kodzero dzemvura kuvarimi muColumbia River Basin. Brady anotarisira kuti rubatsiro urwu ruchabatsira vanoita sarudzo kuti vave nedata rakawanda kuitira kuti vagone kuronga kuwedzera kwekushandisa kwemvura.
"Kurima kaviri ndiyo imwe nzira inogona kubatsira kugadzirisa kukanganiswa kwemamiriro ekunze pakugadzirwa kwechikafu," akadaro Brady. “Asi tinofanira kuronga nezvekushandisa mvura. Iyi purojekiti inhanho yekutanga yakanaka mukuita. "- Scott Weybright, Washington State University