Cov yam ntxwv ntawm Macquarie Island: thaj chaw thaj chaw, xwm txheej thiab huab cua

Cov txheej txheem:

Cov yam ntxwv ntawm Macquarie Island: thaj chaw thaj chaw, xwm txheej thiab huab cua
Cov yam ntxwv ntawm Macquarie Island: thaj chaw thaj chaw, xwm txheej thiab huab cua
Anonim

Muaj ntau pua Islands tuaj nyob ib puag ncig Australia. Macquarie yog ib tug ntawm lawv. Cov kob yog suav tias yog tsis muaj neeg nyob, nws tsuas yog nyob ntawm penguins thiab pluab ntsaws ruaj ruaj. Nyeem txog cov yam ntxwv ntawm Macquarie Island ntxiv hauv kab lus.

Nyob ntawm cov kob

Macquarie yog ib qho me me, elongated daim av nyob rau hauv dej hiav txwv Pacific. Nyob rau hauv nws cov duab, nws zoo li ib daim duab plaub. Nws yog 34 km ntev thiab tsuas yog 5 km dav. Lub cheeb tsam ntawm Macquarie Island yog 128 square kilometers. Qhov siab tshaj plaws saum hiav txwv theem nce mus txog 420 meters.

Kev tswj hwm, Macquarie belongs rau cov kob ntawm Tasmania, txawm hais tias nws nyob li ntawm 1,500 mais ntawm nws. Cov kob yog nyob nruab nrab ntawm Tasmania thiab Antarctica. Kwv yees li 30 mais ntawm Macquarie Island muaj ob pawg me me: Tus Kws Txiav Txim thiab Tus Kws Lij Choj, Npis Sov thiab Tus Cwj Pwm. Lub Npis Sov thiab Clerk archipelago yog ib feem ntawm lub roob hluav taws hauv qab dej thiab thaj chaw nyob rau hauv Tebchaws Australia. Australia tus taw tes rau sab qab teb tseem nyob ntawm no.

Millions xyoo dhau los, kev sib tsoo ntawm Pacific thiab Indo-Australian lithospheric daim hlau pab txhawb kev tsimunderwater ridge, qhov nto ntawm uas yog Macquarie. Cov kob yog lub tsev khaws khoom tiag tiag rau geologists, vim tias ophiolites nyob ntawm nws. Nws tseem yog tib qhov chaw hauv dej hiav txwv uas cov pob zeb mantle protrude saum cov dej. Ua tsaug rau nws cov qauv geological tshwj xeeb, Macquarie tau tiv thaiv los ntawm UNESCO txij li xyoo 1997.

macquarie Islands tuaj
macquarie Islands tuaj

History

Cov kws tshawb fawb qhia tias thawj cov neeg nyob hauv cov kob tuaj yeem yog Polynesians hauv XIII-XIV centuries. Txawm li cas los xij, tsis muaj kev lees paub ncaj qha ntawm qhov no, yog li ntawd, cov neeg European tseem suav tias yog thawj tus neeg nrhiav pom ntawm Australian Macquarie Island. Nws, poob nthav rau nws tus kheej, tau pom nyob rau hauv 1810 los ntawm Frederick Hasselborough, uas tau mus rau hauv kev tshawb nrhiav cov chaw nyob. Tau pom ib lub koog pov txwv uas tsis muaj neeg nyob, tus neeg tsav nkoj Askiv tau xaiv nws ua thaj chaw ntawm South Wales thiab muab nws lub npe tom qab tus tswv xeev Welsh Laknel Macquarie.

Xyoo 1820, Arctic navigator Thaddeus Bellingshausen (tus neeg nrhiav pom ntawm Antarctica) tau tsim thawj daim duab qhia ntawm Macquarie Island. Kev txiav txim siab qhov chaw nyob ntawm thaj av tshiab tau pom tau nyiam penguin thiab cov neeg tua tsiaj nyob ntawm no. Tom qab ntawd, tus lej ntawm cov tsiaj raug txo mus rau qhov tseem ceeb.

Xyoo 1890 cov kob tau pauv mus rau Tasmania thiab xauj los ntawm John Hatch rau kev lag luam. Xyoo 1911, cov kob tau los ua lub hauv paus rau kev tshawb fawb Australian uas coj los ntawm Douglas Mawson. Macquarie tom qab ntawd tau los ua Tasmanian sanctuary thiab tau txais lub xeev txoj cai nyob rau hauv 1972.

Cov kob yog hais nyob rau hauv phau ntawv Travel andwanderings in deb seas”, luam tawm xyoo 1912. Tus sau phau ntawv yog John Thompson. Raws li qhov tshwm sim ntawm lub nkoj poob, nws tau xaus rau Macquarie thiab nyob ntawd li ntawm 4 lub hlis. Raws li cov lus dab neeg, Thompson tau caij nkoj mus rau cov kob rau cov khoom muaj nqis zais.

Huab cua thiab nyem

Cov xwm txheej huab cua ntawm Macquarie Island tsis tau tso cai rau cov neeg Askiv los tsim kom muaj kev sib haum xeeb nyob rau hauv lub xyoo pua 19th. Cov hiav txwv ib puag ncig ua rau huab cua ntawm cov kob hnyav heev. Nws yog characterized li humid subantarctic. Cua (feem ntau nag xob nag cua), pos huab thiab nag nyob ntawm no. Kwv yees li 1000 hli los nag poob ib xyoos.

Huab cua hnyav tiv thaiv kom tsis txhob muaj teeb pom kev. Tus naj npawb ntawm cov hnub ci nyob rau ib xyoos yog 856, tus lej tsawg tshaj plaws ntawm cov Islands tuaj tsuas yog nyob rau ntawm Faroe Islands. Qhov nruab nrab kub ntxiv rau lub Xya Hli yog li 4.9 degrees, thiab qhov kub ntawm lub Kaum Ib Hlis yog 6.5 degrees.

Ntug hiav txwv yog du nyob rau sab hnub tuaj thiab me ntsis indented nrog coves thiab bays nyob rau sab hnub poob. Lub ntug dej hiav txwv ntawm cov kob yog pob zeb, thiab reefs yog muab zais hauv qab dej. Macquarie yog tsim los ntawm ob lub toj siab nyob rau sab qab teb thiab sab qaum teb, uas txuas nrog lub isthmus ntawm lub tiaj. Lub toj siab nyob rau ntawm qhov siab ntawm 100-200 meters saum toj no hiav txwv theem. Mounts Txwj Laug, Fletcher thiab Hamilton yog cov ntsiab lus siab tshaj plaws.

Australian macquarie kob
Australian macquarie kob

Cov neeg nyob thiab cov duab ntawm Macquarie Island

Qhov huab cua hnyav thiab qhov chaw deb ntawm thaj av loj ua rau cov kob tsis zoo rau tib neeg lub neej. Tam sim no, cov neeg nyob ruaj khov ntawm cov kob yog xoom neeg. Qhov tshwj xeeb yog ANARE cov neeg ua haujlwm uas nyob ntawm no ib ntus.

Realcov neeg nyob hauv cov kob yog penguins. Muaj txog 80,000 ntawm lawv ntawm Macquarie. Lub fauna ntawm Macquarie Island yog sawv cev los ntawm cov kab mob cormorants thiab subantarctic fur seals. Ntau tshaj peb lab seabirds sawv cev los ntawm 13 hom sib txawv.

fauna ntawm macquarie Island
fauna ntawm macquarie Island

Cov nroj tsuag ntawm Macquarie Island zoo ib yam li yav qab teb New Zealand. Nws yog tsuas yog qis-loj hlob nyom thiab lichens. Nroj tsuag tsis muaj kiag li, tab sis hom marshy yog nquag loj hlob.

Human influence

Txhua xyoo cov chaw uas tus txiv neej tsis kov tau tsawg dua. Lub tebchaws Australian no tau ua qhov zoo tshaj plaws los tiv thaiv nws cov khoom muaj nrog kev pab los ntawm cov xwm txheej hnyav. Txawm li cas los xij, tus txiv neej ua nws ntawm no.

Yees duab ntawm macquarie Island
Yees duab ntawm macquarie Island

Cov neeg tuaj txog ntawm cov kob tau coj nas, luav thiab miv tuaj rau nws, ua rau muaj kev puas tsuaj tiag tiag. Tsiaj txhu pib noj cov nroj tsuag tshwj xeeb hauv zos, txo nws los ntawm yuav luag ib nrab. Uas, nyob rau hauv lem, ua rau av yaig thiab landslides. Miv tua tau 60,000 tus noog ib xyoos.

Nyob rau xyoo 2012, cov tsiaj tuaj txawv teb chaws yuav luag raug tshem tawm ntawm cov kob. Nws tau dhau los ua qhov nyuaj tshaj plaws los tshem tawm cov luav, ntau tus neeg tau pom ib ntus thiab tseem yog.

Pom zoo: