ʻO ke kiʻi mokulele ʻo Galileo o NASA o ka mahina ʻo Jupiter ʻo Io, ka mahina ʻekolu o ka nui o ka honua. Loaʻa ʻia: NASA/JPL/University of Arizona
Hōʻike ka haʻawina ʻo Rutgers i ke ala hou e hiki ai ke kūkulu ʻia nā dunes ma nā ʻili lani like ʻole.
Ua noʻonoʻo lōʻihi ka poʻe ʻepekema pehea DiaʻO ka mahina o loko loa, ʻo Io, he mau kualono ʻano nani e like me nā mea i ʻike ʻia ma nā kiʻiʻoniʻoni e like me "Dune." I kēia manawa, ua hōʻike ʻia kahi noiʻi noiʻi ʻo Rutgers i kahi wehewehe hou no ke ʻano o ka hana ʻana o nā dunes ma ka ʻili e like me ka hau a me ka wili e like me Io.
ʻO ke aʻo ʻana, paʻi ʻia i ka puke pai Nature Hoʻokaʻa ' ma ʻApelila 19, 2022, ua hoʻokumu ʻia ma ke aʻo ʻana i nā kaʻina hana kino e kāohi ana i ka neʻe ʻana o ka palaoa i hui pū ʻia me ka nānā ʻana o nā kiʻi mai ka misionari 14 makahiki o NASAʻO Galileo mokuahi, ka mea i ʻae i ka hana ʻana i nā palapala ʻāina kikoʻī mua o nā mahina o Jupiter. Manaʻo ʻia ka noiʻi hou e hoʻonui i ko mākou ʻike ʻepekema i nā hiʻohiʻona geological o kēia mau honua like me ka honua.
"Ke kuhikuhi nei kā mākou mau haʻawina i ka hiki ʻana o Io he 'dune honua,'" wahi a ka mea kākau mua ʻo George McDonald, kahi mea noiʻi postdoctoral ma Rutgers 'Earth and Planetary Science Department. "Ua manaʻo mākou, a ua hoʻāʻo nui ʻia, kahi ʻano e hiki ai i nā ʻōpala one ke neʻe, a laila hiki ke kūkulu ʻia nā dunes ma laila."
Hiki i nā puʻu ma luna o ka mahina ʻo Jupiter Io. Hōʻike ka hōʻike ʻana i nā mea ʻeleʻele (hema hema) i hoʻokomo ʻia i kēia manawa i ka pele, ʻoiai ʻo nā hiʻohiʻona e like me ka laina e hoʻomalu nei i ke kiʻi he mau puʻu. ʻO nā wahi ʻālohilohi a keʻokeʻo paha he mau huaʻai hou i hoʻopaʻa ʻia i ka wā e kahe ana ka pele i ka hau e pili ana. ʻAe: NASA/JPL-Caltech/Rutgers
ʻO ka ʻike ʻepekema o kēia manawa ke ʻōlelo nei ʻo nā puʻu, ma ko lākou ʻano, he mau puʻu a he kualono one i ahu ʻia e ka makani. A ʻo ka poʻe ʻepekema i nā haʻawina mua o Io, ʻoiai e wehewehe ana i kona ʻili he mau hiʻohiʻona like me ka dune, ua manaʻo ʻo ia ʻaʻole hiki ke lilo i mau puʻupuʻu no ka mea ua nāwaliwali nā ikaika mai ka makani ma Io ma muli o ka lewa haʻahaʻa haʻahaʻa o ka mahina.
"Ke haʻi mai nei kēia hana iā mākou he ʻokoʻa loa nā kaiapuni kahi i loaʻa ai nā dunes ma mua o nā ʻāina wao nahele maʻamau a pau ʻole ma nā wahi o ka Honua a i ʻole ma ka honua honua Arrakis ma 'Dune," wahi a McDonald.
ʻO ka mikiona Galileo, ka mea i hala mai ka makahiki 1989 - 2003, ua hoʻopaʻa ʻia i nā mea ʻepekema he nui a hiki i kēia lā ke aʻo nei nā mea noiʻi i ka ʻikepili i hōʻiliʻili ʻia. ʻO kekahi o nā ʻike nui i hōʻiliʻili ʻia mai ka ʻikepili, ʻo ia ka nui o ka hana lua pele ma Io - ʻo ia hoʻi, ʻo ia ka nui o kona mau lua pele i ʻike pinepine ʻia a wikiwiki hoʻi i ka honua liʻiliʻi.
ʻO ka ili o Io he hui o nā kahe pele paʻa ʻeleʻele a me ke one, nā kahawai pele “efusive”, a me nā “hau” o ka sulfur dioxide. Ua hoʻohana ka poʻe ʻepekema i nā hoʻohālikelike makemakika e hoʻohālikelike i nā ikaika ma ka ʻōpala hoʻokahi o ka basalt a i ʻole ka hau a helu i kona ala. Ke kahe ka pele i loko o ka sulfur dioxide ma lalo o ka ili o ka mahina, ʻo kona puka ʻana he "ʻoi aku ka paʻakikī a me ka neʻe wikiwiki ʻana e hoʻoneʻe i nā kīʻaha ma Io a hiki paha ke hana i nā hiʻohiʻona nui e like me nā dunes," wahi a McDonald.
I ka manawa i noʻonoʻo ai ka poʻe noiʻi i kahi hana e hiki ai i nā dunes ke hana, ua nānā lākou i nā kiʻi o ka ʻili o Io i lawe ʻia e ka mokulele Galileo no ka hōʻoia hou aku. Ua kūlike ka mokowā o nā piko a me nā lakio kiʻekiʻe-a-ākea a lākou i ʻike ai me nā ʻano o nā dunes i ʻike ʻia ma ka Honua a me nā hokele ʻē aʻe.
"ʻO ka hana e like me kēia e hiki ai iā mākou ke hoʻomaopopo i ke ʻano o ka hana ʻana o ka cosmos," i ʻōlelo ai ʻo Lujendra Ojha, ka mea kākau a me ke kumu aʻoaʻo kōkua ma ka 'Oihana o ka Honua a me nā ʻEpekema Planetary. "I ka hopena, ma ka ʻepekema honua, ʻo ia kā mākou e hoʻāʻo nei e hana."
Hōʻike: “Ka lawe ʻana i ka sediment Aeolian ma Io mai nā pilina pele-hau” na George D. McDonald, Joshua Méndez Harper, Lujendra Ojha, Paul Corlies, Josef Dufek, Ryan C. Ewing a me Laura Kerber, 19 ʻApelila 2022, Nature Hoʻokaʻa '.
DOI: 10.1038 / s41467-022-29682-x
Ua komo pū ka pepa i nā mea kākau mai ke Kulanui o Oregon, Massachusetts Institute of Technology, Texas A&M University a me ka Jet Propulsion Laboratory ma California Institute of Technology.
