Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake
The CROPOS’s ZAGR stations, one of 33 stations of the Croatian permanent GNSS (Global Navigation Satellite System) network CROPOS (Croatian Positioning System), is located in Zagreb’s city centre. For the first time, motion of one of the CROPOS stations (the ZAGR station) during an earthquake shake...
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description | The CROPOS’s ZAGR stations, one of 33 stations of the Croatian permanent GNSS (Global Navigation Satellite System) network CROPOS (Croatian Positioning System), is located in Zagreb’s city centre. For the first time, motion of one of the CROPOS stations (the ZAGR station) during an earthquake shake (the Zagreb 2020 ML5.5) was analysed by the PPK (Post-Processed Kinematic) method using all available GNSS signals (GPS – Global Positioning System, GLONASS – GLObalnaya NAvigatsionnaya Sputnikovaya Sistem, Galileo, Bei-Dou) and seismologically interpreted. The ZAGR station is situated about 9 km to the south-southeast of the earthquake’s epicentre. The analysis showed that the station’s movements, i.e. combined surface and building motion, during the shake was far above the noise level and enabled the assessment of the station’s kinematics: movements in the range of approx. 13 cm in direction north–south (N–S) and approx. 6 cm in direction east–west (E–W). However, movements in the vertical direction were slightly above the noise level. Even though the ZAGR station kinematic behaviour was pronounced, no permanent displacement was identified. The seismological analysis showed that the ZAGR station recorded the onset of the SV-waves on the N–S component, surface waves on the N–S (predominantly Rayleigh waves) and E–W (mainly Love waves) components. The resolution of 1 s of the results of the PPK method have enabled a thorough analysis of the ZAGR station kinematics and pointed out the usefulness of the method in earthquake observations.
CROPOS-ova (Croatian Positioning System) stanica ZAGR jedna je od 33 stanice
hrvatske permanentne mreže GNSS (Global Navigation Satellite System), a nalazi se u
središtu grada Zagreba na krovu zgrade u kojoj su smještena tri fakulteta Sveučilišta u
Zagrebu (Geodetski, Građevinski i Arhitektonski fakultet). Po prvi puta su analizirani
učinci potresa na jednu od stanica mreže CROPOS primjenom metode PPK (Post-Processed Kinematic) koristeći signale svih dostupnih globalnih navigacijskih satelitskih
sustava: GPS, GLONASS, Galileo i BeiDou – i to efekti zagrebačkog potresa ML = 5,5 iz
2020. godine na stanicu ZAGR udaljenu približno 9 km od epicentra potresa. Analiza je
pokazala da su pomaci stanice ZAGR, kao kombinirana gibanja površine i zgrade, tijekom
potresne trešnje bili daleko iznad razine šuma što je omogućilo procjenu kinematičkog
ponašanja stanice: gibanja su bila u smjeru sjever-jug u rasponu približno 13 cm i približno
6 cm |
doi_str_mv | 10.15233/gfz.2021.38.10 |
format | Article |
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CROPOS-ova (Croatian Positioning System) stanica ZAGR jedna je od 33 stanice
hrvatske permanentne mreže GNSS (Global Navigation Satellite System), a nalazi se u
središtu grada Zagreba na krovu zgrade u kojoj su smještena tri fakulteta Sveučilišta u
Zagrebu (Geodetski, Građevinski i Arhitektonski fakultet). Po prvi puta su analizirani
učinci potresa na jednu od stanica mreže CROPOS primjenom metode PPK (Post-Processed Kinematic) koristeći signale svih dostupnih globalnih navigacijskih satelitskih
sustava: GPS, GLONASS, Galileo i BeiDou – i to efekti zagrebačkog potresa ML = 5,5 iz
2020. godine na stanicu ZAGR udaljenu približno 9 km od epicentra potresa. Analiza je
pokazala da su pomaci stanice ZAGR, kao kombinirana gibanja površine i zgrade, tijekom
potresne trešnje bili daleko iznad razine šuma što je omogućilo procjenu kinematičkog
ponašanja stanice: gibanja su bila u smjeru sjever-jug u rasponu približno 13 cm i približno
6 cm u rasponu u smjeru istok-zapad. Gibanja u vertikalnom smjeru identificirana su tek
neznatno iznad razine šuma. Iako je kinematičko gibanje stanice ZAGR bilo izraženo i
jasno vidljivo, nije utvđen nikakav permanentan pomak kao posljedica potresa. Seizmološka
analiza pokazala je da je stanica ZAGR zabilježila početak SV-valova na komponenti
sjever-jug, površinske Rayleigheve valove na komponenti sjever-jug te površinske Loveove
valove na komponenti istok-zapad. Jednosekundni (1 Hz) rezultati omogućili su detaljnu
analizu kinematičkog ponašanja stanice ZAGR kao što su i ukazali na korisnost metode
PPK za određivanje učinaka potresa.</description><identifier>ISSN: 0352-3659</identifier><identifier>EISSN: 1846-6346</identifier><identifier>DOI: 10.15233/gfz.2021.38.10</identifier><language>eng</language><publisher>Andrija Mohorovicic Geophysical Institute</publisher><subject>CROPOS ; earthquake ; GNSS ; kinematic motion ; PPK</subject><ispartof>Geofizika, 2022-01, Vol.38 (2), p.191-214</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://hrcak.srce.hr/logo_broj/21404.jpg</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids></links><search><creatorcontrib>Šugar, Danijel</creatorcontrib><creatorcontrib>Bačić, Željko</creatorcontrib><creatorcontrib>Dasović, Iva</creatorcontrib><title>Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake</title><title>Geofizika</title><description>The CROPOS’s ZAGR stations, one of 33 stations of the Croatian permanent GNSS (Global Navigation Satellite System) network CROPOS (Croatian Positioning System), is located in Zagreb’s city centre. For the first time, motion of one of the CROPOS stations (the ZAGR station) during an earthquake shake (the Zagreb 2020 ML5.5) was analysed by the PPK (Post-Processed Kinematic) method using all available GNSS signals (GPS – Global Positioning System, GLONASS – GLObalnaya NAvigatsionnaya Sputnikovaya Sistem, Galileo, Bei-Dou) and seismologically interpreted. The ZAGR station is situated about 9 km to the south-southeast of the earthquake’s epicentre. The analysis showed that the station’s movements, i.e. combined surface and building motion, during the shake was far above the noise level and enabled the assessment of the station’s kinematics: movements in the range of approx. 13 cm in direction north–south (N–S) and approx. 6 cm in direction east–west (E–W). However, movements in the vertical direction were slightly above the noise level. Even though the ZAGR station kinematic behaviour was pronounced, no permanent displacement was identified. The seismological analysis showed that the ZAGR station recorded the onset of the SV-waves on the N–S component, surface waves on the N–S (predominantly Rayleigh waves) and E–W (mainly Love waves) components. The resolution of 1 s of the results of the PPK method have enabled a thorough analysis of the ZAGR station kinematics and pointed out the usefulness of the method in earthquake observations.
CROPOS-ova (Croatian Positioning System) stanica ZAGR jedna je od 33 stanice
hrvatske permanentne mreže GNSS (Global Navigation Satellite System), a nalazi se u
središtu grada Zagreba na krovu zgrade u kojoj su smještena tri fakulteta Sveučilišta u
Zagrebu (Geodetski, Građevinski i Arhitektonski fakultet). Po prvi puta su analizirani
učinci potresa na jednu od stanica mreže CROPOS primjenom metode PPK (Post-Processed Kinematic) koristeći signale svih dostupnih globalnih navigacijskih satelitskih
sustava: GPS, GLONASS, Galileo i BeiDou – i to efekti zagrebačkog potresa ML = 5,5 iz
2020. godine na stanicu ZAGR udaljenu približno 9 km od epicentra potresa. Analiza je
pokazala da su pomaci stanice ZAGR, kao kombinirana gibanja površine i zgrade, tijekom
potresne trešnje bili daleko iznad razine šuma što je omogućilo procjenu kinematičkog
ponašanja stanice: gibanja su bila u smjeru sjever-jug u rasponu približno 13 cm i približno
6 cm u rasponu u smjeru istok-zapad. Gibanja u vertikalnom smjeru identificirana su tek
neznatno iznad razine šuma. Iako je kinematičko gibanje stanice ZAGR bilo izraženo i
jasno vidljivo, nije utvđen nikakav permanentan pomak kao posljedica potresa. Seizmološka
analiza pokazala je da je stanica ZAGR zabilježila početak SV-valova na komponenti
sjever-jug, površinske Rayleigheve valove na komponenti sjever-jug te površinske Loveove
valove na komponenti istok-zapad. Jednosekundni (1 Hz) rezultati omogućili su detaljnu
analizu kinematičkog ponašanja stanice ZAGR kao što su i ukazali na korisnost metode
PPK za određivanje učinaka potresa.</description><subject>CROPOS</subject><subject>earthquake</subject><subject>GNSS</subject><subject>kinematic motion</subject><subject>PPK</subject><issn>0352-3659</issn><issn>1846-6346</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNo9kMtOwzAQRS0EEqWwZusfSDp-JllWFRSkoqICm24sx3ZS07QBO12Ur8dQxGqujs6MRhehWwI5EZSxSdt85RQoyVmZEzhDI1JymUnG5TkaARM0Y1JUl-gqxncAxhMaoTB3vXWDN1jvLY7Ox13f9a03uktEd8foI-4bPGwcnq2Wz8sXvJ7OVzgOevD9Hm_93u1SNBHbQ_D79tdc6za4GqdvAD8tsMgFdjoMm8-D3rprdNHoLrqbvzlGb_d3r7OHbLGcP86mi8wQXg5ZISjYgjfUFrUsaVWxuikBJCEFGFlVgkguKyCkMdRKbllNalsCp5YAs1awMcpOdzfB6K36CH6nw1H12qsTicG4FBUtqJQy-ZOTb0IfY3DN_woB9VuxShWrn4oVKxNk39axbcg</recordid><startdate>20220131</startdate><enddate>20220131</enddate><creator>Šugar, Danijel</creator><creator>Bačić, Željko</creator><creator>Dasović, Iva</creator><general>Andrija Mohorovicic Geophysical Institute</general><scope>AAYXX</scope><scope>CITATION</scope><scope>VP8</scope></search><sort><creationdate>20220131</creationdate><title>Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake</title><author>Šugar, Danijel ; Bačić, Željko ; Dasović, Iva</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c148t-7520d74f2d7b682993bf80061170c699516469011fc2d64d3b1bd8042d103dd53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>CROPOS</topic><topic>earthquake</topic><topic>GNSS</topic><topic>kinematic motion</topic><topic>PPK</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Šugar, Danijel</creatorcontrib><creatorcontrib>Bačić, Željko</creatorcontrib><creatorcontrib>Dasović, Iva</creatorcontrib><collection>CrossRef</collection><collection>Hrcak: Portal of scientific journals of Croatia</collection><jtitle>Geofizika</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Šugar, Danijel</au><au>Bačić, Željko</au><au>Dasović, Iva</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake</atitle><jtitle>Geofizika</jtitle><date>2022-01-31</date><risdate>2022</risdate><volume>38</volume><issue>2</issue><spage>191</spage><epage>214</epage><pages>191-214</pages><issn>0352-3659</issn><eissn>1846-6346</eissn><abstract>The CROPOS’s ZAGR stations, one of 33 stations of the Croatian permanent GNSS (Global Navigation Satellite System) network CROPOS (Croatian Positioning System), is located in Zagreb’s city centre. For the first time, motion of one of the CROPOS stations (the ZAGR station) during an earthquake shake (the Zagreb 2020 ML5.5) was analysed by the PPK (Post-Processed Kinematic) method using all available GNSS signals (GPS – Global Positioning System, GLONASS – GLObalnaya NAvigatsionnaya Sputnikovaya Sistem, Galileo, Bei-Dou) and seismologically interpreted. The ZAGR station is situated about 9 km to the south-southeast of the earthquake’s epicentre. The analysis showed that the station’s movements, i.e. combined surface and building motion, during the shake was far above the noise level and enabled the assessment of the station’s kinematics: movements in the range of approx. 13 cm in direction north–south (N–S) and approx. 6 cm in direction east–west (E–W). However, movements in the vertical direction were slightly above the noise level. Even though the ZAGR station kinematic behaviour was pronounced, no permanent displacement was identified. The seismological analysis showed that the ZAGR station recorded the onset of the SV-waves on the N–S component, surface waves on the N–S (predominantly Rayleigh waves) and E–W (mainly Love waves) components. The resolution of 1 s of the results of the PPK method have enabled a thorough analysis of the ZAGR station kinematics and pointed out the usefulness of the method in earthquake observations.
CROPOS-ova (Croatian Positioning System) stanica ZAGR jedna je od 33 stanice
hrvatske permanentne mreže GNSS (Global Navigation Satellite System), a nalazi se u
središtu grada Zagreba na krovu zgrade u kojoj su smještena tri fakulteta Sveučilišta u
Zagrebu (Geodetski, Građevinski i Arhitektonski fakultet). Po prvi puta su analizirani
učinci potresa na jednu od stanica mreže CROPOS primjenom metode PPK (Post-Processed Kinematic) koristeći signale svih dostupnih globalnih navigacijskih satelitskih
sustava: GPS, GLONASS, Galileo i BeiDou – i to efekti zagrebačkog potresa ML = 5,5 iz
2020. godine na stanicu ZAGR udaljenu približno 9 km od epicentra potresa. Analiza je
pokazala da su pomaci stanice ZAGR, kao kombinirana gibanja površine i zgrade, tijekom
potresne trešnje bili daleko iznad razine šuma što je omogućilo procjenu kinematičkog
ponašanja stanice: gibanja su bila u smjeru sjever-jug u rasponu približno 13 cm i približno
6 cm u rasponu u smjeru istok-zapad. Gibanja u vertikalnom smjeru identificirana su tek
neznatno iznad razine šuma. Iako je kinematičko gibanje stanice ZAGR bilo izraženo i
jasno vidljivo, nije utvđen nikakav permanentan pomak kao posljedica potresa. Seizmološka
analiza pokazala je da je stanica ZAGR zabilježila početak SV-valova na komponenti
sjever-jug, površinske Rayleigheve valove na komponenti sjever-jug te površinske Loveove
valove na komponenti istok-zapad. Jednosekundni (1 Hz) rezultati omogućili su detaljnu
analizu kinematičkog ponašanja stanice ZAGR kao što su i ukazali na korisnost metode
PPK za određivanje učinaka potresa.</abstract><pub>Andrija Mohorovicic Geophysical Institute</pub><doi>10.15233/gfz.2021.38.10</doi><tpages>24</tpages><oa>free_for_read</oa></addata></record> |
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source | EZB-FREE-00999 freely available EZB journals |
subjects | CROPOS earthquake GNSS kinematic motion PPK |
title | Geodetic and seismological analysis of the CROPOS ZAGR station kinematics during the Zagreb 2020 ML 5.5 earthquake |
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