https://doi.pangaea.de/10.1594/PANGAEA.996292Racasa, Erwin DonErwin DonRacasa0000-0002-9300-1744University of RostockUniversity of the Philippines Los BañosJenner, Anna-KathrinaAnna-KathrinaJennerLeibniz Institute for Baltic Sea Research, WarnemündeSaban, RhodelynRhodelynSabanLeibniz Institute for Baltic Sea Research, WarnemündeKienzler, JakobJakobKienzlerUniversity of RostockBatistel, CherylCherylBatistelUniversity of RostockVisayas State UniversityChoo, SimeonSimeonChooLeibniz Institute for Baltic Sea Research, WarnemündeWang, MiaorunMiaorunWangUniversity of RostockGräwe, UlfUlfGräwe0000-0003-4007-9764Leibniz Institute for Baltic Sea Research, WarnemündeBöttcher, Michael ErnstMichael ErnstBöttcher0000-0002-8877-0303Leibniz Institute for Baltic Sea Research, WarnemündeUniversity of RostockJanssen, ManonManonJanssen0000-0001-7249-8870University of RostockSubmarine groundwater discharge in front of a coastal peatland: Seepage rates and hydrochemistryPANGAEA2026Event labelOptional event labelLatitude of eventLongitude of eventDate/Time of eventDate/Time of event 2Type of studySample typeArea/localityLocationSeepage bag, volume changeSeepage rateOxygen, dissolvedDissolved oxygen saturationTemperature, waterConductivitySalinityTotal dissolved solidspHOxidation reduction (RedOx) potentialChlorideNitriteBromideNitrateSulfateSodiumPotassiumCalciumMagnesiumCarbon, organic, dissolvedCarbon, inorganic, dissolvedNitrogen, total dissolvedPhosphateAmmoniumIronManganeseBariumLithiumStrontiumSiliconδ13C, dissolved inorganic carbonδ18O, waterδ Deuterium, waterSeepage meterBeakerSubmersible pumpsee README file2021-06-30T09:20:00/2021-09-15T11:15:00Dataset10.1007/s12237-025-01607-z2186 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalCoastal peatlands are important carbon, nutrient, and trace metal stores, which might be mobilized and released to the adjacent sea upon rewetting. The objectives of this study were to quantify submarine groundwater discharge (SGD) in front of a rewetted coastal peatland at the southern Baltic Sea coast, to estimate associated fluxes of solutes, and to characterize the discharged water using stable oxygen, hydrogen, and carbon isotope composition. We directly measured SGD rates and collected the discharging water using seepage meters in summer and autumn 2021. SGD, seawater and groundwater were analyzed for major ion, nutrient, DOC/DIC and trace metal concentrations as well as the composition of water and carbon isotopes. Racasa et al. (2026) is based on this dataset.12.116276112.17270454.2159811654.226027Coastal Baltic Sea, GermanyGerman Research Foundationhttps://doi.org/10.13039/501100001659240942083DFG Research Training Group Baltic TRANSCOAST