Ke Palapala ʻĀina ʻana i nā Palena o nā Papa Tectonic me ka hoʻohana ʻana i nā ʻAno Geophysical
Aia ʻo Indonesia ma kekahi o nā wahi tectonic ikaika loa o ka honua. ʻO nā ʻōlaʻi, nā pele pele, a me ke kūkulu ʻia ʻana o nā mauna he mau hōʻike maopopo ia e neʻe mau ana ka ʻili o ka Honua. Ma hope o kēia dinamika aia kahi ʻāpana koʻikoʻi e hoʻokele i kēia kaʻina hana: nā papa tectonic. Hoʻopili kēia mau papa kekahi i kekahi ma nā wahi pili i kapa ʻia ʻo nā palena papa. No ka hoʻomaopopo ʻana a me ka hoʻokele ʻana i nā pōʻino geological, a no ka hoʻomaikaʻi ʻana i ka pololei o nā hiʻohiʻona evolutionary o ka Honua, he mea nui ka palapala ʻāina ʻana i nā palena papa tectonic. ʻO kekahi o nā ala hilinaʻi loa i kēia ma o nā ʻano geophysical.
Nā Manaʻo Kumu o nā Palena Papa Tectonic
Ma keʻano laulā, ua māhele ʻia nā palena o nā papa i ʻekolu ʻano nui. ʻO ka mua, nā palena hui, kahi e kuʻi ai nā papa ʻelua. Hoʻokumu pinepine kēia i nā ʻāpana subduction, nā ʻauwaha moana, nā piʻo pele, a me nā ōlaʻi nui a nui loa. ʻO ka lua, nā palena divergent, kahi e neʻe ai nā papa ʻelua i kaʻawale, e ʻae ana i ka magma e piʻi aʻe a hana i ka ʻili hou, no ka laʻana, ma nā kualono waena o ke kai. ʻO ke kolu, nā palena hoʻololi, kahi e paheʻe ai nā papa ʻelua ma ke ʻano pālahalaha kekahi i kekahi, e hana ana i nā hewa hoʻololi a hoʻoulu i nā ōlaʻi pāpaʻu, hiki ke luku.
ʻO kahi pilikia nui o ka palapala ʻāina ʻana, ʻaʻole ʻike maopopo ʻia nā palena o nā papa ma luna o ka ʻili. He nui nā palena i loko o ke kai, i uhi ʻia e nā sediments mānoanoa, a paʻakikī paha ma muli o ke alo o nā microplates, nā hewa lālā, a me ka hoʻololi ākea o ka crustal. Maanei e komo mai ai nā ʻano hana geophysical: "ʻike" lākou i ke ʻano o lalo o ka ʻili ma o ka pane kino o ka Honua i nā nalu, ka umekaumaha, nā kahua magnetic, a me ka hoʻololi ʻana.
Seismology: Ke Kuamoʻo o ka Palapala ʻĀina Palena o ka Papa
ʻO ke ʻano hana geophysical koʻikoʻi loa no ke kaha kiʻi ʻana i nā palena o ka papa, ʻo ia ka seismology, no ka mea, ma muli o nā ʻōlaʻi e hahai ana i nā ʻāpana hewa a me nā pilina o ka papa. Aia kekahi mau ʻano hana seismological i hoʻohana pinepine ʻia:
1. Ka hoʻolaha ʻana o nā hypocenters o ka ōlaʻi
Ma ke kaha palapala ʻana i nā wahi a me nā hohonu o nā ōlaʻi, hiki i nā kānaka noiʻi ke hahai i ke ʻano o nā palena o nā papa. Ma nā wahi subduction, no ka laʻana, hoʻokumu nā hypocenters ōlaʻi i kahi mokulele iho i lalo i ʻike ʻia ʻo ka Wadati-Benioff zone. Hōʻailona kēia ʻano i ka papa moana e subducting ana i loko o ka mantle.
2. Nā ʻano hana hoʻoikaika a me ka manawa
ʻO ke kālailai ʻana i ke "ʻano hewa" o kahi ōlaʻi (inā he hewa thrust, he hewa strike-slip, a he hewa strike-slip paha) e kōkua i ka hoʻokaʻawale ʻana i nā ʻano palena papa. Hoʻomalu ʻia nā palena convergent e ka compression (thrust faults), hoʻomalu ʻia nā palena divergent e ka extension (slip faults), a hoʻomalu ʻia nā palena transform e ka neʻe shear.
3. ʻIke tomography ōlaʻi
E like me ka CT scan o ke kino kanaka, hoʻohālikelike ka tomography seismic i nā ʻano like ʻole o ka wikiwiki o ka nalu seismic. ʻIke pinepine ʻia nā papa subducting anuanu ma ke ʻano he mau anomalies wikiwiki kiʻekiʻe, ʻoiai nā wahi mehana, e like me ka piʻi ʻana o ka mantle a i ʻole nā keʻena magma, e hōʻike ana i nā wikiwiki haʻahaʻa. ʻAe kēia i nā palena o ka papa e wehewehe ʻia ma luna o nā haneli kilomita.
4. Ka hoʻohuli ʻana o ke ōlaʻi a me ka refraction
Hoʻohana nā anamanaʻo seismic ikaika i nā kumu ikehu (e laʻa, nā pū ea ma ke kai) e palapala i ke ʻano o ka ʻili honua me nā kikoʻī. He mea koʻikoʻi nā ʻano noʻonoʻo no ka ʻike ʻana i nā pelu, nā hewa, nā ʻāpana accretion, a me ka mānoanoa o ka sediment ma nā ʻauwaha subduction, ʻoiai ke kōkua nei nā ʻano refraction i ka helu ʻana i ka mānoanoa o ka ʻili honua a me ka palena Moho.
Geodesy (GPS a me InSAR): Ke Ana Pololei ʻana i ka Neʻe ʻana o ka Papa
Inā hoʻohālikelike ka seismology i ka "trace" o nā pilina papa ma o nā ōlaʻi a me nā hale ma lalo o ka ʻili, a laila ana ka geodesy i kā lākou neʻe ʻana ma luna o ka ʻili.
1. GPS Geodetic
Hiki i kahi pūnaewele o nā kikowaena GPS mau ke hoʻopaʻa i nā neʻe ʻana o ka ʻili honua ma ke ʻano o millimeters a i kenimika i kēlā me kēia makahiki. Mai kēia mau vectors velocity, hiki ke ʻike ʻia nā palena o ka papa ma ke ʻano he mau ʻāpana o nā loli wikiwiki ʻoi—no ka laʻana, a puni nā hewa nui a i ʻole nā lihi o nā ʻāpana subduction. Eia kekahi, ʻike pū ka GPS i ka hōʻiliʻili ʻana o ke koʻikoʻi, e hōʻike ana i nā ʻāpana paʻa e hoʻoulu ai i nā ʻōlaʻi nui.
2. InSAR (Radar Aperture Synthetic Interferometric)
Hoʻohana ʻo InSAR i nā kiʻi radar ukali e palapala i ka hoʻololi ʻana o ka ʻili ma hope o nā ōlaʻi a i ʻole nā kaʻina hana tectonic lohi. He kūpono loa kēia ʻano hana i ka nānā ʻana i nā ʻano paheʻe ma nā hewa, ka hoʻololi ʻana i nā wahi subduction, a me nā neʻe mālie e paʻakikī ke ʻike ma o nā nānā ʻana ma ke kahua.
ʻO ka hui pū ʻana o GPS a me InSAR e hoʻopuka i kahi ʻike piha: ʻoi aku ka maikaʻi o ka GPS i ka ʻikepili moʻo manawa lōʻihi, ʻoiai ʻoi aku ka maikaʻi o InSAR i ka hoʻonā spatial kiʻekiʻe.
Ke ʻAno Umekaumaha: Ke Hōʻike nei i nā ʻokoʻa o ka Density a me nā ʻAno Nui
Hōʻike nā ʻokoʻa o ka wikiwiki o ka umekaumaha o ka Honua i nā ʻokoʻa o ka nui o ka pōhaku. Ma kahi pālākiō tectonic, hiki i nā anomalies umekaumaha ke hōʻike:
– Nā ʻauwaha moana a me nā wahi hoʻoheheʻe ʻia me nā ʻokoʻa o ka nui o ka mānoanoa.
– Ka mānoanoa o ka ʻili honua ma nā wahi kuʻi ʻāina.
– Ke ʻano o ke kualono moana, ke kīʻaha, a i ʻole ke kīʻaha piʻo hope.
Loaʻa ka ʻikepili umekaumaha ma o ka ʻāina, ke kai, ka lewa, a me nā ana ukali. He paʻakikī ke wehewehe ʻia kona wehewehe ʻana ma muli o kona ʻano kū hoʻokahi ʻole (hiki i nā hiʻohiʻona density he nui ke hana i nā ʻano like ʻole), akā he ikaika loa ia i ka wā e hui pū ʻia me ka seismology a me ka geology.
Ke ʻAno Hana Makeneka: Nā Kaha o ka Hoʻokumu ʻana o ka ʻIli Moana a me nā Hapa
He mea pono loa nā ana ʻana magnetic ma nā wahi moana. Ke paʻa ka pele basaltic ma ka papahele o ke kai, hoʻopaʻa nā minelala magnetic i ke kuhikuhi o ke kahua magnetic o ka Honua i kēlā manawa. Ma muli o ka hoʻololi pinepine ʻana o ke kahua magnetic o ka Honua i kona polarity, hoʻokumu ʻia nā ʻano "banding" symmetrical o nā anomalies magnetic ma nā kualono waena o ke kai. ʻO kēia mau ʻano ke hōʻike mua o ka hohola ʻana o ka papahele o ke kai a kōkua i ka hoʻoholo ʻana:
– Kahi o nā palena ʻokoʻa (nā kualono).
– Ka wikiwiki o ka hoʻokumu ʻia ʻana o ka ʻili hou.
– Ka neʻe ʻana o ka ʻaoʻao ma kahi hewa hoʻololi e ʻoki ana i ke kualono.
Ma ka ʻāina, hiki i nā anomalies magnetic ke kōkua i ka palapala ʻana i nā komo ʻana o ka igneous, nā palena pōhaku, a me nā laina hewa, ʻoiai ʻoi aku ka paʻakikī o kā lākou wehewehe ʻana ma muli o nā loli i ka lithology.
Nā Hana Uila Malemake (MT/CSEM): Nā Wai, Nā Heheʻe, a me nā ʻĀpana Nawaliwali
Hoʻomalu pinepine ʻia nā palena o nā papa e ke alo o nā wai, nā mea heheʻe hapa, a me kekahi mau minelala e hoʻolilo i nā pōhaku i mea alakaʻi. Ana ʻo Magnetotellurics (MT) i ka pane o ka ʻili honua i nā ʻano like ʻole o nā kahua electromagnetic kūlohelohe, no laila e palapala ana i ka hoʻolaha ʻana o ka resistivity uila.
Ma nā ʻāpana subduction, no ka laʻana, hoʻokuʻu ka dehydration slab i nā wai e piʻi aʻe i loko o ka mantle luna a hoʻoulu i ka hoʻokumu ʻana o ka magma. ʻIke ʻia nā ʻāpana waiwai wai a i ʻole nā mea heheʻe ma ke ʻano he mau anomalies haʻahaʻa. Kōkua ka ʻikepili MT i ka ʻike ʻana i nā ala wai, nā ʻāpana nāwaliwali, a me nā pilina kūpono i nā arcs lua pele.
Hoʻohui ʻana i nā ʻano hana like ʻole: Ke kī i ka palapala ʻāina hilinaʻi
ʻAʻohe ʻano hana geophysical hoʻokahi i "kūpono" no ke kaha kiʻi ʻana i nā palena o ka papa ma lalo o nā kūlana āpau. No laila, ʻo nā ʻano hana hou e hoʻohui i nā ʻikepili he nui:
– Seismology no ke ʻano honua papa a me ka hana ōlaʻi.
– GPS/InSAR no nā ʻano hoʻololi kino a me nā wikiwiki o ka neʻe ʻana.
– Ke kaumaha no nā hale nui.
– Ka mōʻaukala makeneka o ka ʻili moana a me nā hewa hoʻololi.
– MT no nā wai a me nā mea hoʻoheheʻe e kaohi ana i nā wahi nāwaliwali.
Hoʻokō ʻia ka hoʻohui ʻana ma o ka hoʻohuli hui ʻana, ke kumu hoʻohālike tectonic helu, a me ka wehewehe ʻana ma muli o ka geology o ka ʻili a me ka bathymetry.
Nā Pilikia a me nā Kuhikuhi o ka Hoʻomohala ʻana
ʻO kekahi o nā pilikia nui, ʻo ia nā palena o nā pūnaewele mea hana ma nā wahi mamao a i ʻole ke kai hohonu, ka walaʻau ʻikepili, a me ka paʻakikī o nā tectonics, ʻaʻole i hahai mau i nā palena maʻalahi. I ka wā e hiki mai ana, ʻo ka hoʻonui ʻana i ka nui o nā mea ʻike seismic a me GPS, ka hoʻohana ʻana i nā buoys geodetic a me nā seismometers seafloor, ka hoʻohana ʻana i nā satelite radar hanauna hou, a me ka helu inversion holomua e hoʻomaikaʻi i ka hoʻonā ʻana o ka palapala ʻāina palena papa.
Pani
ʻO ke kaha kiʻi ʻana i nā palena papa tectonic me ka hoʻohana ʻana i nā ʻano hana geophysical he hana nui ia i ka hoʻomaopopo ʻana i ka dinamika o ka Honua a me ka hōʻemi ʻana i ka pilikia o nā pōʻino geological. Hōʻike ka Seismology i nā ʻano ōlaʻi a me nā ʻano o lalo o ka honua, ana pololei ka geodesy i ka neʻe ʻana o ka papa, hōʻike ka umekaumaha a me nā kahua magnetic i nā ʻano kino o ka ʻili a me ka mantle, ʻoiai ʻo nā ʻano electromagnetic e hopu i ke kuleana o nā wai a me nā mea hoʻoheheʻe. Me ka hoʻohui ʻana o nā ʻano hana he nui, hiki ke kaha kiʻi ʻia nā palena papa "ʻike ʻole ʻia" ma mua me ka maopopo, e kōkua ana i ka geoscience, ka hoʻolālā ʻāina, a me ka hoʻēmi ʻana i nā pōʻino ma nā wahi hana e like me Indonesia.
Inā makemake ʻoe, hiki iaʻu ke hoʻololi i kēia ʻatikala i ke ʻano o ka ʻāina ʻInidonesia (e.g., ʻo Sunda Megathrust, Banda Arc, Sumatra Fault, a me ka Indo-Australian–Eurasian–Pacific junction), a i ʻole e hoʻohui i kahi papa inoa ʻepekema.
