Urban Geophone Array Yana Ba da Sabon Duba a Basin Los Angeles

1 ga watan Agusta 2018 – Ta yin amfani da dunƙulen kofi masu girman-kofi da aka tura na kimanin wata guda a bayan gida, wuraren wasan golf da wuraren shakatawa na jama'a, masu bincike sun tattara isassun bayanai don ba su damar tsara zurfin da sifar San Gabriel da San Bernardino Los Angeles, California.

Masana ilimin girgizar kasa suna ganin wadannan kwandunan da ke kwance na iya yin “jagora” don mayar da hankali da kuma kama tarko daga girgizar kasa a kudancin San Andreas Laifi, don haka fahimtar tsarinsu yana da mahimmanci don taimakawa hango yadda za su iya watsa makamashi daga irin wannan girgizar kasa zuwa cikin garin Los Angeles .

Tawagar masu binciken, karkashin jagorancin Patricia Persaud na Jami'ar Jihar Louisiana da Robert Clayton daga Cibiyar Fasaha ta California, sun sami damar tsara tashoshin biyu a daki-daki fiye da karatun da suka gabata, a cewar rahoton da suka gabatar a Wasikun Bincike na Seismological Research. Sun nuna cewa kwarin San Gabriel ya fi zurfin San Bernardino da kuma cewa kwarin na San Bernardino yana da fasali mara tsari. Persaud da abokan aikin sa sun kuma gano alamun ɓarkewar ɓarna a cikin ɓawon burodin ƙasa wanda zai iya alaƙa da lahani biyu - kuskuren Red Hill da Raymond - waɗanda a baya aka tsara su a wuraren da ke kusa da saman.

Patricia Persaud da Mackenzie Wooten, dalibi ne na CalTech, sun tura kumburi a farfajiyar gidan Los Angeles. / Patricia Farisa

Persaud ya ce "A halin yanzu ya yi wuri a ce yadda sakamakonmu zai canza yadda za mu iya tunanin irin wadannan kwaruruka na yada taswirar girgizar kasa." "Duk da haka, muna tattara ƙarin bayanai a yankin da za a yi amfani da su don ƙara tsaftace tsarin kwatarn."

Geophones sune kayan aikin da ke canza saurin motsi na ƙasa zuwa ƙarfin lantarki wanda za'a iya amfani dashi don ƙayyade yanayin tsarin da ke ƙarƙashin fuskar duniya. Yin duba dalla-dalla game da tsarin shimfidar ƙasa yana buƙatar adadi mai yawa na tashoshin girgizar ƙasa waɗanda ke tazara sosai don ɗaukar mahimman canje-canje a cikin tsarin ta gefen kwatancen. Shirye-shiryen Geophone suna ba da hanya mai arha kuma mai yuwuwa don tattara wannan bayanan a cikin biranen da ke da yawan jama'a, idan aka kwatanta da rikice-rikice da kuma kashe kuɗi na tura ɗimbin mashigai masu nisa, in ji Persaud.

Kowane ɗayan nodes 202 da aka ɗora a cikin binciken, a cikin layuka uku da ke faɗin rafuffukan arewacin, sun kai girman gwangwanin kofi. "Sun auna kimanin fam shida kuma suna da na'urar adana bayanai, batir da kuma rikodi duk a cikin akwati daya," in ji Persaud. “Don sanya su a cikin ƙasa muna haƙa ƙaramin rami wanda zai ba da damar rufe ƙwayoyin da ƙasa mai inci biyu da zarar sun kafu sosai. Yawancin mazaunan yankin Los Angeles suna gaya mana mu sanya su a duk inda muke so, wasu ma suna taimaka mana mu haƙa ramuka; don haka mun zabi wani shafi a farfajiyar su kuma cikin kimanin minti biyar muna da kumburi a wurin da yin rikodi. ”

Persaud ya ce, a mafi yawan lokuta, masu mallakar kadarori sun kasance “abokantaka da sassauci” yayin binciken na yanzu. “Abin ban sha’awa shi ne lokacin da muka sami kyakkyawar amsa ya kusan nan da nan. Mazauna Los Angeles suna sane da haɗarin girgizar ƙasa a cikin wannan yankin, kuma galibi suna da sha'awar bincikenmu da mahaɗan, kuma suna so su sami ƙarin bayani. Wasu suna ba da labari game da nazarinmu ta hanyar kafofin sada zumunta da ƙarfafa abokansu da maƙwabta su ma su shiga. ”

Node ɗin sun tattara bayanai ci gaba har tsawon kwanaki 35. A wannan lokacin, sun gano motsi ƙasa daga girma 6 da manyan girgizar ƙasa da suka faru dubban kilomita nesa da Los Angeles. Za'a iya amfani da bayanan girgizar ƙasa daga waɗannan girgizar ƙasa ta teleseismic tare da hanyar da ake kira dabarar aikin mai karɓar don ɗaukar kaurin ɓawon ɓawon burodi da ƙananan ɓawon ɓawon burodi a ƙasa da tashar girgizar ƙasa. Ayyukan mai karɓar lasafta daga ƙirar nodal suna kama da waɗanda aka ƙididdige daga bayanan mai amfani da bayanai, masu binciken sun ƙarasa, amma tsararren nodal yana ba da kyakkyawar ƙuduri a tsarin ɓawon burodi kamar iyaka tsakanin ɓawon burodi na duniya da alkyabba da maɓallin keɓaɓɓen abubuwa. ginshikin ginshiki a fadin basins.

Wannan bazarar, ƙungiyar masu binciken ta sake dawowa a California suna sanya node "tare da sabbin layuka waɗanda ake niyyar cikewa a kowane yanki inda canjin yanayi zai kasance," in ji Persaud. "Yanzu haka mun tura sabbin bayanan martaba guda uku sannan za mu tattara sakamako daga dukkan bayanan mu don samar da ingantaccen tsarin kwalliya."


Post lokaci: Sep-02-2020