Periodic Degassing Rhythms in Three Mineral Springs in the Neuwied Basin, Germany 2016

<para>We present a geochemical dataset acquired during continual sampling over 7 months (bi-weekly) and 4 weeks (every 8 hours) in the Neuwied Basin, a part of the East Eifel Volcanic Field (EEVF, Germany). We used a combination of geochemical, geophysical, and statistical methods to describe and identify potential causal processes underlying the correlations of degassing patterns of CO2, He, Rn, and tectonic processes in three investigated mineral springs (Nette, Kärlich and Kobern). We provide for the first time, temporal analyses of periodic degassing patterns (1 day and 2-6 days) in springs. The temporal fluctuations in cyclic behavior of 4–5 days that we recorded had not been observed previously but may be attributed to a fundamental change in either gas source processes, subsequent gas transport to the surface, or the influence of volcano-tectonic earthquakes. Periods observed at 10 and 15 days may be related to discharge pulses of magma in the same periodic rhythm. We report the potential hint that deep low-frequency (DLF) earthquakes might actively modulate degassing. Temporal analyses of the CO2-He and CO2-Rn couples indicate that all springs are interlinked by previously unknown fault systems. The volcanic activity in the EEVF is dormant but not extinct. To understand and monitor its magmatic and degassing systems in relation to new developments in DLF-earthquakes and magmatic recharging processes and to identify seasonal variation in gas flux, we recommend continual monitoring of geogenic gases in all available springs taken at short temporal intervals.</para> </section> </abstract> <keywordSet> <keyword>carbon dioxide</keyword> <keyword>chemistry</keyword> <keyword>gas flux</keyword> <keyword>geological processes</keyword> <keyword>soil</keyword> <keywordThesaurus>LTER controlled vocabulary</keywordThesaurus> </keywordSet> <keywordSet> <keyword>disturbance</keyword> <keywordThesaurus>LTER core area</keywordThesaurus> </keywordSet> <keywordSet> <keyword>Harvard Forest</keyword> <keyword>HFR</keyword> <keyword>LTER</keyword> <keyword>USA</keyword> <keywordThesaurus>HFR default</keywordThesaurus> </keywordSet> <intellectualRights> <section> <para>This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.</para> </section> </intellectualRights> <licensed> <licenseName>Creative Commons Zero v1.0 Universal</licenseName> <url>https://spdx.org/licenses/CC0-1.0.html</url> <identifier>CC0-1.0</identifier> </licensed> <distribution> <online> <url function="information">https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf321</url> </online> </distribution> <coverage> <geographicCoverage> <geographicDescription>Germany. Coordinates based on WGS84 datum.</geographicDescription> <boundingCoordinates> <westBoundingCoordinate>+7.43955</westBoundingCoordinate> <eastBoundingCoordinate>+7.43955</eastBoundingCoordinate> <northBoundingCoordinate>+50.33976</northBoundingCoordinate> <southBoundingCoordinate>+50.33976</southBoundingCoordinate> <boundingAltitudes> <altitudeMinimum>318</altitudeMinimum> <altitudeMaximum>318</altitudeMaximum> <altitudeUnits>meter</altitudeUnits> </boundingAltitudes> </boundingCoordinates> </geographicCoverage> <temporalCoverage> <rangeOfDates> <beginDate> <calendarDate>2016</calendarDate> </beginDate> <endDate> <calendarDate>2016</calendarDate> </endDate> </rangeOfDates> </temporalCoverage> </coverage> <maintenance> <description> <para>complete</para> </description> </maintenance> <contact scope="document"> <positionName>Information Manager</positionName> <organizationName>Harvard Forest</organizationName> <address scope="document"> <deliveryPoint>324 North Main Street</deliveryPoint> <city>Petersham</city> <administrativeArea>MA</administrativeArea> <postalCode>01366</postalCode> <country>USA</country> </address> <phone phonetype="voice">(978) 724-3302</phone> <electronicMailAddress>hf-im@lists.fas.harvard.edu</electronicMailAddress> </contact> <publisher scope="document"> <organizationName>Harvard Forest</organizationName> <address scope="document"> <deliveryPoint>324 North Main Street</deliveryPoint> <city>Petersham</city> <administrativeArea>MA</administrativeArea> <postalCode>01366</postalCode> <country>USA</country> </address> <phone phonetype="voice">(978) 724-3302</phone> <phone phonetype="fax">(978) 724-3595</phone> <onlineUrl>https://harvardforest.fas.harvard.edu</onlineUrl> </publisher> <methods> <methodStep> <description> <section> <title/> <para>See publication for additional details: Berberich, G.M., Berberich, M.B., Ellison, A.M., Wöhler, C. 2018. Degassing Rhythms and Fluctuations of Geogenic Gases in A Red Wood-Ant Nest and in Soil in The Neuwied Basin (East Eifel Volcanic Field, Germany. Insects, 9, 135; doi:10.3390/insects9040135</para> </section> </description> </methodStep> </methods> <project> <title>Harvard Forest Long-Term Ecological Research Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf321-01-co2-8hr.csv CO2 8-hour data hf321-01-co2-8hr.csv 5017 5d8cb5fc093b45d49bf489d045e2b652 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-01-co2-8hr.csv datetime date and time YYYY-MM-DDThh:mm 1 minute NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm 1 minute NA missing value matlab.datetime Matlab date and time (UTC) dimensionless 0.0001 real NA missing value ms.nette mineral spring Nette (vol. %) dimensionless 1 whole NA missing value ms.kaerlich mineral spring Kärlich (vol. %) dimensionless 1 whole NA missing value ms.kobern mineral spring Kobern (vol. %) dimensionless 1 whole NA missing value 90 hf321-02-helium-8hr.csv helium 8-hour data hf321-02-helium-8hr.csv 7190 bf92d33531e2d6248a3604e4590126ef 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-02-helium-8hr.csv datetime date and time YYYY-MM-DDThh:mm 1 minute NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm 1 minute NA missing value matlab.datetime Matlab date and time (UTC) dimensionless 0.0001 real NA missing value ms.nette mineral spring Nette (ppb) dimensionless 0.00001 real NA missing value ms.kaerlich mineral spring Kärlich (ppb) dimensionless 0.00001 real NA missing value ms.kobern mineral spring Kobern (ppb) dimensionless 0.000001 real NA missing value 90 hf321-03-radon-8hr.csv radon 8-hour data hf321-03-radon-8hr.csv 7172 5fa054ea679658689bf48e16b2f7710f 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-03-radon-8hr.csv datetime date and time YYYY-MM-DDThh:mm 1 minute NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm 1 minute NA missing value matlab.datetime Matlab date and time (UTC) dimensionless 0.0001 real NA missing value ms.nette mineral spring Nette (Bq/L) becquerelPerLiter 0.00000001 real NA missing value ms.kaerlich mineral spring Kärlich (Bq/L) becquerelPerLiter 0.00000001 real NA missing value ms.kobern mineral spring Kobern (Bq/L) becquerelPerLiter 0.00000001 real NA missing value 90 hf321-04-co2-biweekly.csv CO2 biweekly data hf321-04-co2-biweekly.csv 943 125803c68e1ee525484969a2bc8053b1 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-04-co2-biweekly.csv datetime date and time YYYY-MM-DDThh:mm 1 minute NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm 1 minute NA missing value matlab.datetime Matlab date and time (UTC) dimensionless 0.0001 real NA missing value ms.nette mineral spring Nette (vol. %) dimensionless 1 whole NA missing value ms.kaerlich mineral spring Kärlich (vol. %) dimensionless 1 whole NA missing value ms.kobern mineral spring Kobern (vol. %) dimensionless 1 whole NA missing value 16 hf321-05-helium-biweekly.csv helium biweekly hf321-05-helium-biweekly.csv 1357 a03ed3fb61200a4c60df55b7fb02e78a 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-05-helium-biweekly.csv datetime date and time YYYY-MM-DDThh:mm 1 minute NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm 1 minute NA missing value matlab.datetime Matlab date and time (UTC) dimensionless 0.0001 real NA missing value ms.nette mineral spring Nette (ppb) dimensionless 0.00001 real NA missing value ms.kaerlich mineral spring Kärlich (ppb) dimensionless 0.000001 real NA missing value ms.kobern mineral spring Kobern (ppb) dimensionless 0.000001 real NA missing value 16 hf321-06-radon-biweekly.csv radon biweekly data hf321-06-radon-biweekly.csv 1367 84eb3b876f182c0bb6132ec02d296133 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-06-radon-biweekly.csv datetime date and time YYYY-MM-DDThh:mm 1 minute NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm 1 minute NA missing value matlab.datetime Matlab date and time (UTC) dimensionless 0.0001 real NA missing value ms.nette mineral spring Nette (Bq/L) becquerelPerLiter 0.00000001 real NA missing value ms.kaerlich mineral spring Kärlich (Bq/L) becquerelPerLiter 0.00000001 real NA missing value ms.kobern mineral spring Kobern (Bq/L) becquerelPerLiter 0.00000001 real NA missing value 16 hf321-07-earthquakes.csv earthquakes hf321-07-earthquakes.csv 4620 557633ad9861fbd6ff34fb493dfc76d1 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-07-earthquakes.csv datetime date and time (UTC) YYYY-MM-DDThh:mm:ss 1 second NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm:ss 1 second NA missing value matlab.datetime Matlab date and time (UTC) number 0.0001 real NA missing value location location of earthquake location of earthquake NA missing value ml magnitude magnitude NA missing value depth depth kilometer 0.1 real NA missing value x x coordinate in GK degree 1 natural NA missing value y y coordinate in GK degree 1 natural NA missing value dist.nette distance from mineral spring Nette kilometer 0.01 real NA missing value dist.kaerlich distance from mineral spring Kärlich kilometer 0.01 real NA missing value dist.kobern distance from mineral spring Kobern kilometer 0.01 real NA missing value 43 hf321-08-local-weather.csv local weather hf321-08-local-weather.csv 4677658 a136ae04ecb627ca26c086be8d612a35 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p32/hf321/hf321-08-local-weather.csv datetime date and time (UTC) YYYY-MM-DDThh:mm:ss 1 second NA missing value date date YYYY-MM-DD 1 day NA missing value time time (UTC) hh:mm:ss 1 second NA missing value matlab.datetime Matlab date and time (UTC) number 0.0001 real NA missing value abspress.hpa absolute pressure millibar 0.1 real NA missing value outtemp.c outdoor temperature celsius 0.1 real NA missing value dewpoint.c dew point celsius 0.1 real NA missing value out.humidity outdoor humidity (%) dimensionless 1 natural NA missing value hour.rainfall.mm hourly rainfall millimeter 0.1 real NA missing value gust.kmh wind gust kilometersPerHour 0.1 real NA missing value windchill.c wind chill celsius 0.1 real NA missing value wind.dir wind direction wind direction NA missing value wind.speed.kmh wind speed kilometersPerHour 0.1 real NA missing value interval.min measurement interval (minute) number 1 natural NA missing value 52767 international long-term measurement unit of radioactivity per fluid volume