Nhazi Galperin

Ntọala Galperin bụ otu nhazi nke ihe mmetụta dị na klas nkè ngwá ọrụ ala ọma jijiji na-atụle mmegharị ala ma na-akpọ ya aha ónyé Soviet seisomologist Evsey Iosifovich Galperin,  Ónyé webatara ya na 1955 maka nyocha mmanụ. 

 Nkọwa 
alt=Geometry of the Galperin configuration: three orthogonal vectors (U, V, W) are rotated to the Cartesian coordinate system (E, N, Z).|thumb|300x300px|Geometry nke nhazi Galperin: atọ orthogonal vectors (U, V, W) na-atụgharị na usoro nhazi Cartesian (E, N, Z).
Ndị na-ahụkarị triaxial Seismometers na-enye ihe mgbaàmà na axis orthogonal atọ na-eche ihu n'ébé ọwụwa anyanwụ-ọdịda anyanwụ (E), n'ébé ugwu-ndịda (N) na elu-ala (Z), ya bụ na usoro nhazi Cartesian. N'ụzọ dị iche, nhazi Galperin nwèrè axis orthogonal atọ (U, V, W) nke a na-eche ihu n'otu akụkụ ahụ n'ihe gbasara mbara ala (α=35.26°). A na-ekewapụta axis atọ niile n'elu ụgbọ elu ahụ site na otu narị na iri abụọ degrees, nke na-ebute "symmetric triaxial" imewe. A na-eweta ihe ndekọ ndị e nwetara na nhazi Galperin na usoro nhazi Cartesian site na mgbanwe nhazi na-esonụ, ébé β=30 °:

Isi uru nke nhazi Galperin bụ na ndị nnata atọ ahụ nwèrè otu ntụziaka n'ihe gbásárá axis kwụ ọtọ ma, ya mèrè, ha nwèrè otu nzaghachi ngwá ọrụ. Uru ọzọ bụ ikike iwu obere ngwugwu (ya bụ, ngwá ọrụ) ma e jiri ya tụnyere nhazi Cartesian,  nke na-eme ka nhazi Galperin dị irè karịsịa màkà ntinye borehole. Uru ndị ọzọ nke nhazi Galperin gụnyere ọdịiche dị mfe n'etiti isi iyi mkpọtụ mpụga na nke dị n'ime  na eziokwu ahụ bụ na nhazi ahụ anaghị echebara ntụgharị gburugburu axis kwụ ọtọ. Graizer, V. (2009-05-01). "The Response to Complex Ground Motions of Seismometers with Galperin Sensor Configuration". Bulletin of the Seismological Society of America. 99 (2B): 1366–1377. Bibcode:2009BuSSA..99.1366G. doi:10.1785/0120080174. ISSN 0037-1106. Otú ọ dị, isi ihe na-adịghị mma nke nhazi ahụ bụ na a na-ejikọta vector niile site na matrik ntụgharị, nke na-akpata ọdịda nke usoro dum mgbè otu n'ime ihe mmetụta atọ ahụ na-adịghị arụ ọrụ. Na nhazi Cartesian, dịka ọmụmaatụ, ihe abụọ dị larịị ka na-enye data bara uru ma ọ bụrụ na akụkụ kwụ ọtọ (Z) adaa.

Ntọala Galperin chọtara ọtụtụ ngwa na imewe seismometer, gụnyere ụdị màkà oghere, ala oké osimiri, na ntinye vault. A pụkwara itinye nhazi Galperin n'akụkụ isi iyi iji mepụta isi iyi atọ nkè ala ọma jijiji 

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