Attenuation of High-Frequency Seismic Waves in NW Iran
We analyzed 872 local earthquakes recorded by 18 seismic stations to estimate P-, S-, and coda-wave quality factors for NW Iran, an active seismic and geothermal region in the central part of the Alpine-Himalayan orogeny in western Asia. The calculated frequency-dependent attenuation relations are a...
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| Veröffentlicht in: | Pure and applied geophysics 2024-06, Vol.181 (6), p.1811-1829 |
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| creator | Zarunizadeh, Zahra Motaghi, Khalil Rahimi, Habib |
| description | We analyzed 872 local earthquakes recorded by 18 seismic stations to estimate P-, S-, and coda-wave quality factors for NW Iran, an active seismic and geothermal region in the central part of the Alpine-Himalayan orogeny in western Asia. The calculated frequency-dependent attenuation relations are as follows:
Q
p
= 38 ± 2
f
1.00±0.07
,
Q
s
= 79 ± 2
f
0.90±0.17
, and
Q
c
= 64 ± 1
f
0.86±0.18
(for a lapse time window length of 50 s). The depth variations of
Q
c
were investigated by estimating
Q
c
at five lapse time windows ranging from 30 to 70 s. The Analysis of
Q
c
in sub-regions surrounding Sahand volcano, Sabalan volcano, and Talesh Mountains indicates that
Q
c
is increasing with the increase of the lapse times. However, the
Q
c
values estimated in the areas surrounding the volcanoes are generally lower than those of the Talesh Mountains, confirming a lithospheric contrast between the warm and weak lithosphere of NW Iran and the more rigid South Caspian Basin lithosphere located beneath the Talesh Mountains. The average
Q
s
/
Q
p
ratio in NW Iran is > 1.6 at all frequencies, likely due to a high degree of heterogeneities and thermal activities in the crust. |
| doi_str_mv | 10.1007/s00024-024-03496-y |
| format | Article |
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Q
p
= 38 ± 2
f
1.00±0.07
,
Q
s
= 79 ± 2
f
0.90±0.17
, and
Q
c
= 64 ± 1
f
0.86±0.18
(for a lapse time window length of 50 s). The depth variations of
Q
c
were investigated by estimating
Q
c
at five lapse time windows ranging from 30 to 70 s. The Analysis of
Q
c
in sub-regions surrounding Sahand volcano, Sabalan volcano, and Talesh Mountains indicates that
Q
c
is increasing with the increase of the lapse times. However, the
Q
c
values estimated in the areas surrounding the volcanoes are generally lower than those of the Talesh Mountains, confirming a lithospheric contrast between the warm and weak lithosphere of NW Iran and the more rigid South Caspian Basin lithosphere located beneath the Talesh Mountains. The average
Q
s
/
Q
p
ratio in NW Iran is > 1.6 at all frequencies, likely due to a high degree of heterogeneities and thermal activities in the crust.</description><identifier>ISSN: 0033-4553</identifier><identifier>EISSN: 1420-9136</identifier><identifier>DOI: 10.1007/s00024-024-03496-y</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Attenuation ; Earth and Environmental Science ; Earth Sciences ; Earthquakes ; Frequency dependence ; Geophysics/Geodesy ; Lithosphere ; Mountains ; Original Paper ; Orogeny ; P-waves ; Seismic activity ; Seismic waves ; Volcanoes ; Windows (intervals)</subject><ispartof>Pure and applied geophysics, 2024-06, Vol.181 (6), p.1811-1829</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-a293t-372a5ebd335de871d73fb139f28b4f69e81daac90722c15c1a1f1b931f9da8ad3</cites><orcidid>0000-0002-9165-029X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00024-024-03496-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00024-024-03496-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Zarunizadeh, Zahra</creatorcontrib><creatorcontrib>Motaghi, Khalil</creatorcontrib><creatorcontrib>Rahimi, Habib</creatorcontrib><title>Attenuation of High-Frequency Seismic Waves in NW Iran</title><title>Pure and applied geophysics</title><addtitle>Pure Appl. Geophys</addtitle><description>We analyzed 872 local earthquakes recorded by 18 seismic stations to estimate P-, S-, and coda-wave quality factors for NW Iran, an active seismic and geothermal region in the central part of the Alpine-Himalayan orogeny in western Asia. The calculated frequency-dependent attenuation relations are as follows:
Q
p
= 38 ± 2
f
1.00±0.07
,
Q
s
= 79 ± 2
f
0.90±0.17
, and
Q
c
= 64 ± 1
f
0.86±0.18
(for a lapse time window length of 50 s). The depth variations of
Q
c
were investigated by estimating
Q
c
at five lapse time windows ranging from 30 to 70 s. The Analysis of
Q
c
in sub-regions surrounding Sahand volcano, Sabalan volcano, and Talesh Mountains indicates that
Q
c
is increasing with the increase of the lapse times. However, the
Q
c
values estimated in the areas surrounding the volcanoes are generally lower than those of the Talesh Mountains, confirming a lithospheric contrast between the warm and weak lithosphere of NW Iran and the more rigid South Caspian Basin lithosphere located beneath the Talesh Mountains. The average
Q
s
/
Q
p
ratio in NW Iran is > 1.6 at all frequencies, likely due to a high degree of heterogeneities and thermal activities in the crust.</description><subject>Attenuation</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earthquakes</subject><subject>Frequency dependence</subject><subject>Geophysics/Geodesy</subject><subject>Lithosphere</subject><subject>Mountains</subject><subject>Original Paper</subject><subject>Orogeny</subject><subject>P-waves</subject><subject>Seismic activity</subject><subject>Seismic waves</subject><subject>Volcanoes</subject><subject>Windows (intervals)</subject><issn>0033-4553</issn><issn>1420-9136</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kDFPwzAUhC0EEqXwB5gsMRue_ZI4HquK0koVDIA6Wk5il1TUKXaClH9P2iCxMZxuue_e0xFyy-GeA8iHCAAiYSdhojLWn5EJTwQwxTE7JxMARJakKV6Sqxh3AFzKVE1INmtb6zvT1o2njaPLevvBFsF-ddaXPX21ddzXJd2Ybxtp7enzhq6C8dfkwpnPaG9-fUreF49v8yVbvzyt5rM1M0Jhy1AKk9qiQkwrm0teSXQFR-VEXiQuUzbnlTGlAilEydOSG-54oZA7VZncVDgld2PvITTDS7HVu6YLfjipEWSSpwpzGFJiTJWhiTFYpw-h3pvQaw76uI8e99EnHffR_QDhCMUh7Lc2_FX_Q_0AlQZnkw</recordid><startdate>20240601</startdate><enddate>20240601</enddate><creator>Zarunizadeh, Zahra</creator><creator>Motaghi, Khalil</creator><creator>Rahimi, Habib</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-9165-029X</orcidid></search><sort><creationdate>20240601</creationdate><title>Attenuation of High-Frequency Seismic Waves in NW Iran</title><author>Zarunizadeh, Zahra ; Motaghi, Khalil ; Rahimi, Habib</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a293t-372a5ebd335de871d73fb139f28b4f69e81daac90722c15c1a1f1b931f9da8ad3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Attenuation</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Earthquakes</topic><topic>Frequency dependence</topic><topic>Geophysics/Geodesy</topic><topic>Lithosphere</topic><topic>Mountains</topic><topic>Original Paper</topic><topic>Orogeny</topic><topic>P-waves</topic><topic>Seismic activity</topic><topic>Seismic waves</topic><topic>Volcanoes</topic><topic>Windows (intervals)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zarunizadeh, Zahra</creatorcontrib><creatorcontrib>Motaghi, Khalil</creatorcontrib><creatorcontrib>Rahimi, Habib</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Pure and applied geophysics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zarunizadeh, Zahra</au><au>Motaghi, Khalil</au><au>Rahimi, Habib</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Attenuation of High-Frequency Seismic Waves in NW Iran</atitle><jtitle>Pure and applied geophysics</jtitle><stitle>Pure Appl. Geophys</stitle><date>2024-06-01</date><risdate>2024</risdate><volume>181</volume><issue>6</issue><spage>1811</spage><epage>1829</epage><pages>1811-1829</pages><issn>0033-4553</issn><eissn>1420-9136</eissn><abstract>We analyzed 872 local earthquakes recorded by 18 seismic stations to estimate P-, S-, and coda-wave quality factors for NW Iran, an active seismic and geothermal region in the central part of the Alpine-Himalayan orogeny in western Asia. The calculated frequency-dependent attenuation relations are as follows:
Q
p
= 38 ± 2
f
1.00±0.07
,
Q
s
= 79 ± 2
f
0.90±0.17
, and
Q
c
= 64 ± 1
f
0.86±0.18
(for a lapse time window length of 50 s). The depth variations of
Q
c
were investigated by estimating
Q
c
at five lapse time windows ranging from 30 to 70 s. The Analysis of
Q
c
in sub-regions surrounding Sahand volcano, Sabalan volcano, and Talesh Mountains indicates that
Q
c
is increasing with the increase of the lapse times. However, the
Q
c
values estimated in the areas surrounding the volcanoes are generally lower than those of the Talesh Mountains, confirming a lithospheric contrast between the warm and weak lithosphere of NW Iran and the more rigid South Caspian Basin lithosphere located beneath the Talesh Mountains. The average
Q
s
/
Q
p
ratio in NW Iran is > 1.6 at all frequencies, likely due to a high degree of heterogeneities and thermal activities in the crust.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s00024-024-03496-y</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0002-9165-029X</orcidid></addata></record> |
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| subjects | Attenuation Earth and Environmental Science Earth Sciences Earthquakes Frequency dependence Geophysics/Geodesy Lithosphere Mountains Original Paper Orogeny P-waves Seismic activity Seismic waves Volcanoes Windows (intervals) |
| title | Attenuation of High-Frequency Seismic Waves in NW Iran |
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