He aha te Isostasy me ōna pānga
Ko te Isostasy he ariā matawhenua e pā ana ki te āhua o te taurite ā-papa i waenga i te kiri o te Ao (lithosphere) me te papa raro (asthenosphere). He tūāpapa nui tēnei ariā mō te mārama ki ngā nekehanga ā-roto o te Ao, e whakamārama ana i te whakawhiti o te papatipu hei whakatutuki i te taurite ā-papa. I roto i tēnei tuhinga, ka tūhuratia e tātou te ariā taketake o te isostasy, me pēhea tana mahi, me ōna pānga ki ngā āhuatanga matawhenua me te taiao.
Hītori me te Ariā Taketake o te Isostasy
I te rautau 19, i whakaarohia tuatahitia te ariā o te isostasy e ngā kaipūtaiao pērā i a John Pratt rāua ko George Airy, i a rāua e ngana ana ki te whakamārama i ngā rerekētanga o te teitei o te mata o te Ao. I whakaarohia e ngā kaipūtaiao e rua ngā tauira rerekē hei whakamārama i te isostasy. I tautohe a Pratt he rerekē te matotoru o te kiri o te Ao i runga i te teitei, nō reira he iti ake te matotoru o ngā rohe teitei. I tetahi atu taha, i whakaarohia e Airy he rerekē te matotoru o te kiri o te Ao, engari he pumau te matotoru; ka "mānu" ngā rohe teitei i runga i te papa matotoru ake nā te mea he matotoru ake tō rātou kiri.
Ka taea te whakarite i te isostasy ki tētahi kaipuke e mānu ana i runga i te wai: ka hohonu ake te totohu i te pikinga ake o tōna taumaha, ā, ka teitei ake te rere i te hekenga iho o tōna taumaha. Waihoki, ki te kiri o te Ao, ka hohonu ake te totohu o ngā wāhi taumaha, pērā i ngā maunga, ki roto i te papa e karapoti ana, ko ngā wāhi māmā ake, pērā i ngā awaawa, ka teitei ake.
Tikanga Mahi Isostasis
Ko te kirinuku o te Ao he mea hanga ki te lithosphere pakari me te asthenosphere kirihou ake ka taea te rere i ngā wā matawhenua. Ina huri te papatipu o te mata o te Ao, ka ngana te lithosphere ki te whakatutuki i tētahi taurite hou mā te rere o ngā rauemi ki roto, ki waho rānei i te asthenosphere.
He maha ngā tikanga matua e mahi ai te isostasy:
1. Te Matotoru me te Angiangi o te Papa Whenua: Hei tauira, ina hangaia ngā maunga mā roto i ngā tukanga tectonic, ka matotoru te papa whenua, ka totohu hohonu ki roto i te asthenosphere. I tetahi atu taha, ko ngā wāhi e pāngia ana e te horo, e te rewa hukapapa rānei ka "ara" nā te mama o te papatipu.
2. Te Utaina me te Whakaora o te Hukapapa: I ngā wā hukapapa, ka pēhia e ngā papa huka matotoru te kiri o te Ao, ka puta te hekenga isostatic. Ina rewa te hukapapa, ka māmā te pēhanga, ā, ka tīmata te kiri o te whenua ki te "peke anō," ki te piki rānei. Ka kiia tēnei tukanga ko te peke isostatic.
3. Te Whakawhiti Parataiao: Ka taea hoki e te whakatakotoranga parataiao ki ngā wahapū awa, ki ngā takotoranga moana rānei te whakaputa i ngā huringa pēhanga i roto i te lithosphere, ā, ka urutau tēnei ki te whakatutuki i te taurite isostatic.
Ngā Pānga o te Isostasy
He maha ngā pānga o te ariā o te isostasy ki te matawhenua, tae atu ki te hanganga maunga, te mahi tectonic, me ētahi atu āhuatanga taiao. Anei ētahi tauira o ngā pānga nui o te isostasy:
1. Te Hanganga me te Horo o ngā Maunga:
– Ka totohu ngā maunga teitei, taumaha, pērā i te Himalayas, ki roto i te papa o raro hei whakatutuki i te taurite isostatic. Ina tīmata te horo ki te whakaiti i te papatipu o te maunga, ka ara ake anō te kiri o raro. Mā tēnei tukanga e whakamārama he aha i noho teitei ai ngā maunga ahakoa te nui o te horo.
2. Whakahokinga Isostatic:
– Ko ngā wāhi i kapi i te hukapapa i te wā hukapapa whakamutunga, pērā i a Scandinavia me Kanata, kei te pāngia tonu e te pikinga isostatic i te mea ka whakatikatika te kiri o te Ao i muri i te kawe hukapapa nui. Ka pā tēnei tukanga ki te āhua o te whenua, ki ngā tauira rere o te awa, tae atu ki ngā taumata o te moana i ngā rohe e karapoti ana.
3. Te Pūmautanga o te Kirinuku o te Ao mō te Wā Roa:
– Mā te isostasy ka mau tonu te pumau o te kirinuku o te Ao mō te wā roa. Ki te kore tēnei tikanga, tera pea ka nui ake te rerekētanga me te kore taurite o ētahi wāhi o te mata o te Ao, ka ara ake pea ētahi atu raruraru, pērā i te rū whenua me te kore pumau o te pūnaha rauropi.
4. Te Tūhuratanga Rauemi Taiao:
– He mea nui anō hoki te mārama ki te isostasy i roto i te tūhuratanga o te hinu, te hau māori, me ngā kohuke. Ka pāngia te tohatoha o ngā paru me ngā hanganga whenua e ngā huringa isostatic, ā, ka pāngia hoki te pūmanawa mō te huraina o ngā rauemi māori.
5. Pānga ki ngā Pūnaha Rauropi:
– Ka taea e te hokinga whakamuri me te nekehanga o te papa whenua te whakarerekē i ngā kāinga noho tūturu, te hanga roto hou, me te whakarerekē i ngā rere o te awa. Ka pā kino, ka pā kino hoki ēnei āhuatanga ki ngā pūnaha rauropi o te rohe.
Whakamutunga
Ko te Isostasy tētahi ariā matua i roto i te matawhenua e whakamārama ana i te āhua o te kiri o te Ao e tutuki ai te taurite ā-papa mā te whakarerekē i tōna papatipu. Mai i tōna whakaurunga mai e ngā kaipūtaiao o te rautau 19, kua āwhina tēnei ariā ki te whakamārama i te whānuitanga o ngā āhuatanga matawhenua, mai i te hanganga maunga ki te whakahokinga isostatic i muri i te wā hukapapa.
Haunga te mea nui ki te mārama ki ngā whanaketanga ā-roto o Papatūānuku, he whānui hoki ngā pānga o te isostasy ki te hangarau me te taiao, tae atu ki te āwhina i te tūhuratanga rauemi taiao me ngā rangahau huringa āhuarangi. Nō reira, he mea nui te isostasy ehara i te mea ki ngā tohunga whenua me ngā kaipūtaiao whenua anake, engari ki te marea whānui hoki nā te mea he pānga ki ō tātou oranga o ia rā me te taiao e karapoti nei i a tātou. Mā te ako tonu me te mārama ki te isostasy ka taea e tātou te whakahaere me te tiaki pai ake i te ao e noho nei tātou.
