Near-surface study of a hot spring site in Fiji
A geophysical investigation of a hot spring system located in Rabulu, Fiji, was carried out from October 2014 to March 2015. The investigation covered a survey area of 6075 m 2 . Self-potential (SP), ground temperature and soil carbon dioxide (CO 2 ) concentrations were measured and investigated for...
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| Veröffentlicht in: | Acta geophysica 2018-08, Vol.66 (4), p.659-672 |
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| creator | Lal, Alvin Deo, Ravin N. Kumar, Ajal |
| description | A geophysical investigation of a hot spring system located in Rabulu, Fiji, was carried out from October 2014 to March 2015. The investigation covered a survey area of 6075 m
2
. Self-potential (SP), ground temperature and soil carbon dioxide (CO
2
) concentrations were measured and investigated for their distribution characteristics and inter-linkages. Results indicated obvious anomalous zone at the hot spring discharge site. The SP profile analysis highlighted thermal water upwelling zones and elevation-driven subsurface groundwater pathways. Measurement of subsurface temperatures up to 1 m depths revealed increasing temperatures, indicating potentially high thermal gradients in the area. Surface soil CO
2
distributions also agreed with SP and ground temperature results. The overall result of the study demonstrated that synchronised measurements of SP, ground temperature and soil CO
2
can be instrumental in identifying anomalous zones near the hot spring sites. Other parameters such as spring water temperature, discharge rate and energy flux estimates from the spring were calculated and analysed. The high-dense multi-parameter data coverage allowed interpretation of geothermal features at a scale never conducted in Fiji before. The near-surface investigations reported in this study corroborate previously suggested steady geothermal activity in the region, deserving further detailed investigation. |
| doi_str_mv | 10.1007/s11600-018-0173-7 |
| format | Article |
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2
. Self-potential (SP), ground temperature and soil carbon dioxide (CO
2
) concentrations were measured and investigated for their distribution characteristics and inter-linkages. Results indicated obvious anomalous zone at the hot spring discharge site. The SP profile analysis highlighted thermal water upwelling zones and elevation-driven subsurface groundwater pathways. Measurement of subsurface temperatures up to 1 m depths revealed increasing temperatures, indicating potentially high thermal gradients in the area. Surface soil CO
2
distributions also agreed with SP and ground temperature results. The overall result of the study demonstrated that synchronised measurements of SP, ground temperature and soil CO
2
can be instrumental in identifying anomalous zones near the hot spring sites. Other parameters such as spring water temperature, discharge rate and energy flux estimates from the spring were calculated and analysed. The high-dense multi-parameter data coverage allowed interpretation of geothermal features at a scale never conducted in Fiji before. The near-surface investigations reported in this study corroborate previously suggested steady geothermal activity in the region, deserving further detailed investigation.</description><identifier>ISSN: 1895-6572</identifier><identifier>EISSN: 1895-7455</identifier><identifier>DOI: 10.1007/s11600-018-0173-7</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Carbon dioxide ; Carbon dioxide concentration ; Earth and Environmental Science ; Earth Sciences ; Energy flux ; Geophysics ; Geophysics/Geodesy ; Geotechnical Engineering & Applied Earth Sciences ; Groundwater ; Hot springs ; Parameter identification ; Research Article - Applied Geophysics ; Soil investigations ; Soil surfaces ; Spring water ; Structural Geology ; Subsurface temperatures ; Thermal water ; Upwelling ; Water discharge ; Water temperature</subject><ispartof>Acta geophysica, 2018-08, Vol.66 (4), p.659-672</ispartof><rights>Institute of Geophysics, Polish Academy of Sciences & Polish Academy of Sciences 2018</rights><rights>Acta Geophysica is a copyright of Springer, (2018). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a339t-18142a409979bcccfd63347c8b57f9c68760cf44f4145cb2d725ed591e6235e33</citedby><cites>FETCH-LOGICAL-a339t-18142a409979bcccfd63347c8b57f9c68760cf44f4145cb2d725ed591e6235e33</cites><orcidid>0000-0003-2766-9516</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/s11600-018-0173-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11600-018-0173-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Lal, Alvin</creatorcontrib><creatorcontrib>Deo, Ravin N.</creatorcontrib><creatorcontrib>Kumar, Ajal</creatorcontrib><title>Near-surface study of a hot spring site in Fiji</title><title>Acta geophysica</title><addtitle>Acta Geophys</addtitle><description>A geophysical investigation of a hot spring system located in Rabulu, Fiji, was carried out from October 2014 to March 2015. The investigation covered a survey area of 6075 m
2
. Self-potential (SP), ground temperature and soil carbon dioxide (CO
2
) concentrations were measured and investigated for their distribution characteristics and inter-linkages. Results indicated obvious anomalous zone at the hot spring discharge site. The SP profile analysis highlighted thermal water upwelling zones and elevation-driven subsurface groundwater pathways. Measurement of subsurface temperatures up to 1 m depths revealed increasing temperatures, indicating potentially high thermal gradients in the area. Surface soil CO
2
distributions also agreed with SP and ground temperature results. The overall result of the study demonstrated that synchronised measurements of SP, ground temperature and soil CO
2
can be instrumental in identifying anomalous zones near the hot spring sites. Other parameters such as spring water temperature, discharge rate and energy flux estimates from the spring were calculated and analysed. The high-dense multi-parameter data coverage allowed interpretation of geothermal features at a scale never conducted in Fiji before. The near-surface investigations reported in this study corroborate previously suggested steady geothermal activity in the region, deserving further detailed investigation.</description><subject>Carbon dioxide</subject><subject>Carbon dioxide concentration</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Energy flux</subject><subject>Geophysics</subject><subject>Geophysics/Geodesy</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Groundwater</subject><subject>Hot springs</subject><subject>Parameter identification</subject><subject>Research Article - Applied Geophysics</subject><subject>Soil investigations</subject><subject>Soil surfaces</subject><subject>Spring water</subject><subject>Structural Geology</subject><subject>Subsurface temperatures</subject><subject>Thermal water</subject><subject>Upwelling</subject><subject>Water discharge</subject><subject>Water temperature</subject><issn>1895-6572</issn><issn>1895-7455</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kD9PwzAQxS0EEqXwAdgsMZv6_O_iEVWUIlWwwGw5jg2poCl2MvTbkyqVmBhOd8N77-5-hNwCvwfOcVEADOeMQzUWSoZnZAaV1QyV1uen2WgUl-SqlC3nRnEQM7J4iT6zMuTkQ6SlH5oD7RL19LPradnndvdBS9tH2u7oqt221-Qi-a8Sb059Tt5Xj2_LNdu8Pj0vHzbMS2l7BhUo4RW3Fm0dQkiNkVJhqGqNyQZToeEhKZUUKB1q0aDQsdEWohFSRynn5G7K3efuZ4ild9tuyLtxpRNcI4LVshpVMKlC7krJMbnx4m-fDw64O3JxExc3cnFHLg5Hj5g803cx_yX_b_oFNjpisg</recordid><startdate>20180801</startdate><enddate>20180801</enddate><creator>Lal, Alvin</creator><creator>Deo, Ravin N.</creator><creator>Kumar, Ajal</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L6V</scope><scope>L7M</scope><scope>M2P</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope><orcidid>https://orcid.org/0000-0003-2766-9516</orcidid></search><sort><creationdate>20180801</creationdate><title>Near-surface study of a hot spring site in Fiji</title><author>Lal, Alvin ; Deo, Ravin N. ; Kumar, Ajal</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a339t-18142a409979bcccfd63347c8b57f9c68760cf44f4145cb2d725ed591e6235e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Carbon dioxide</topic><topic>Carbon dioxide concentration</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Energy flux</topic><topic>Geophysics</topic><topic>Geophysics/Geodesy</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Groundwater</topic><topic>Hot springs</topic><topic>Parameter identification</topic><topic>Research Article - Applied Geophysics</topic><topic>Soil investigations</topic><topic>Soil surfaces</topic><topic>Spring water</topic><topic>Structural Geology</topic><topic>Subsurface temperatures</topic><topic>Thermal water</topic><topic>Upwelling</topic><topic>Water discharge</topic><topic>Water temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lal, Alvin</creatorcontrib><creatorcontrib>Deo, Ravin N.</creatorcontrib><creatorcontrib>Kumar, Ajal</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>ProQuest Engineering Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><jtitle>Acta geophysica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lal, Alvin</au><au>Deo, Ravin N.</au><au>Kumar, Ajal</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Near-surface study of a hot spring site in Fiji</atitle><jtitle>Acta geophysica</jtitle><stitle>Acta Geophys</stitle><date>2018-08-01</date><risdate>2018</risdate><volume>66</volume><issue>4</issue><spage>659</spage><epage>672</epage><pages>659-672</pages><issn>1895-6572</issn><eissn>1895-7455</eissn><abstract>A geophysical investigation of a hot spring system located in Rabulu, Fiji, was carried out from October 2014 to March 2015. The investigation covered a survey area of 6075 m
2
. Self-potential (SP), ground temperature and soil carbon dioxide (CO
2
) concentrations were measured and investigated for their distribution characteristics and inter-linkages. Results indicated obvious anomalous zone at the hot spring discharge site. The SP profile analysis highlighted thermal water upwelling zones and elevation-driven subsurface groundwater pathways. Measurement of subsurface temperatures up to 1 m depths revealed increasing temperatures, indicating potentially high thermal gradients in the area. Surface soil CO
2
distributions also agreed with SP and ground temperature results. The overall result of the study demonstrated that synchronised measurements of SP, ground temperature and soil CO
2
can be instrumental in identifying anomalous zones near the hot spring sites. Other parameters such as spring water temperature, discharge rate and energy flux estimates from the spring were calculated and analysed. The high-dense multi-parameter data coverage allowed interpretation of geothermal features at a scale never conducted in Fiji before. The near-surface investigations reported in this study corroborate previously suggested steady geothermal activity in the region, deserving further detailed investigation.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s11600-018-0173-7</doi><tpages>14</tpages><orcidid>https://orcid.org/0000-0003-2766-9516</orcidid></addata></record> |
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| subjects | Carbon dioxide Carbon dioxide concentration Earth and Environmental Science Earth Sciences Energy flux Geophysics Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Groundwater Hot springs Parameter identification Research Article - Applied Geophysics Soil investigations Soil surfaces Spring water Structural Geology Subsurface temperatures Thermal water Upwelling Water discharge Water temperature |
| title | Near-surface study of a hot spring site in Fiji |
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