
orthometric oonchaai

orthometric oonchaai nalsaji rekha key saath ack ruchi key bindu seey ack sandarbh satah taka urdhvaadhar doori "aich" haye jise "geoid" key roop mein jaanaa jaataa haye, urdhvaadhar datum joe samudra key star kaa ausat anuman lagaata haye. orthometric oonchaai, bhooganak mein anya prakaar kii oonchaai key saath-saath, ack aam vyakti kii "samudra tala seey oonchaai" key vaigyaanik aupchaarikaranon mein seey ack haye.
sanyukt raajya america mein, vartamaan navd88 datum kissy bhee sthaan key sateek ausat samudra tala key bajaay ack bindu parr ack paribhaashit oonchaai seey bandha huaa haye. orthometric oonchaai kaa upayog aamtaur parr sanyukt raajya america mein engineering kaary key liye kiya jaataa haye, halanki gatishil oonchaai koo badey paimaane parr jall sambandhi uddeshyon key liye chunaa jaa sakata haye. maapa gayaa ankon key liye oonchaai rashtriya bhoo-sthaanik sarvekshan detta sheet parr dikhaai gaee haye, joe hajaaron meal seey adhik sateek bhavna star dwara kaee dashakon mein ekatra kiya gayaa thaa.
orthometric oonchaai key vikalpon mein gatishil oonchaai aur samanya oonchaai shamil haye, aur vibhinn desh orthometric key bajaay una paribhashaon key saath kaam karane kaa vikalp chuna sakate hain. way apani sandarbh satah key liye thodi alag lekin samaan paribhaashaaen bhee apana sakate hain.
choonki badey kshetron mein gurutvaakarshan sthir naheen hotaa haye, isaliye sandarbh satah key alawa kissy star kii satah (samatulya) kii orthometric oonchaai sthir naheen hoti haye, aur usa prabhaav key liye orthometric oonchaai koo thheek karane kii aavashyakta hoti haye. udaaharan key liye, dakshini kii tulanaa mein uttari sanyukt raajyon mein gurutvaakarshan 0.1% adhik majboot haye, isaliye ack star kii satah jisaki ack sthaan parr 1000 meater kii orthometric oonchaai haye, anya sthaanon parr 1001 meater oonchi hogi. vaastav mein, ack badey bhaugolik kshetra mein paani key star key saath kaam karate samay gatishil oonchaai sabse upayukt oonchaai maap haye.
gurutvaakarshan bhinnataon koo thheek karke bhinn star oonchaai antar seey orthometric oonchaai praapt kii jaa sakati haye.
vyaavhaarik anuprayogon koo prithvi mein gurutvaakarshan kshamata banaam gaharaai mein parivartan kii ganana karane key liye maap key bajaay ack model kaa upayog karna chaahiye, kyonki bhoo-bhaag bhoomi kii satah key adhikansh bhaag (ee.jee., Navd88 kii "helmert orthometric oonchaai").
jee. pee. aiss. maap prithvi-kendrit nirdeshank dete hain, joe aamtaur parr sandarbh dirghvrittakar key oopar dirghvrittakar oonchaai key roop mein pradarshit hotey hain. yeh bhoo-ayami oonchaai key ghataav dwara bhoo-ayami oonchaai key oopar orthometric oonchaai seey sambandhit hoe sakata haye. bhoo-nirdhaaran key liye usa sthaan key liye sateek gurutvaakarshan detta kii aavashyakta hoti haye; sanyukt raajya america mein, ngs ney 2022 key datum key hisse key roop mein ack nae bhoo-maanak model koo jaari karane key lakshya key saath iss tarah key detta koo praapt karane key liye gurutva-dee duss-varsheeya karyakram shuru kiya haye.

