PANGAEA_995958 High-resolution porewater salinity measurements across contrasting subterranean estuaries Nayak, Soumya Kanta; Ehlert von Ahn, Cátia Milene; Gupta, Naveen; Ramasamy, Murugan; Nozik, Alexandra; Nandimandalam, Janardhana Raju; Moosdorf, Nils High-resolution porewater salinity measurements across contrasting subterranean estuaries 2026-07-14 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995958 Investigator Soumya Kanta Nayak soumya.kanta.nayak@leibniz-zmt.de Earth Science Event label DEPTH, sediment/rock Salinity Conductivity Temperature, water Comment geoscientificInformation East coast of India Marine Drive beach MD_1_India MD_10_India MD_100_India MD_101_India MD_102_India MD_103_India MD_104_India MD_105_India MD_106_India MD_11_India MD_12_India MD_13_India MD_14_India MD_15_India MD_16_India MD_17_India MD_18_India MD_19_India MD_2_India MD_20_India MD_21_India MD_22_India MD_23_India MD_24_India MD_25_India MD_26_India MD_27_India MD_28_India MD_29_India MD_3_India MD_30_India MD_31_India MD_32_India MD_33_India MD_34_India MD_35_India MD_36_India MD_37_India MD_38_India MD_39_India MD_4_India MD_40_India MD_41_India MD_42_India MD_43_India MD_44_India MD_45_India MD_46_India MD_47_India MD_48_India MD_49_India MD_5_India MD_50_India MD_51_India MD_52_India MD_53_India MD_54_India MD_55_India MD_56_India MD_57_India MD_58_India MD_59_India MD_6_India MD_60_India MD_61_India MD_62_India MD_63_India MD_64_India MD_65_India MD_66_India MD_67_India MD_68_India MD_69_India MD_7_India MD_70_India MD_71_India MD_72_India MD_73_India MD_74_India MD_75_India MD_76_India MD_77_India MD_78_India MD_79_India MD_8_India MD_80_India MD_81_India MD_82_India MD_83_India MD_84_India MD_85_India MD_86_India MD_87_India MD_88_India MD_89_India MD_9_India MD_90_India MD_91_India MD_92_India MD_93_India MD_94_India MD_95_India MD_96_India MD_97_India MD_98_India MD_99_India MD_C1_India MD_C2_India MD_C3_India MD_C4_India MD_C5_India MD_C6_India MD_C7_India MD_S1_India MD_S10_India MD_S100_India MD_S101_India MD_S102_India MD_S103_India MD_S104_India MD_S105_India MD_S106_India MD_S107_India MD_S108_India MD_S109_India MD_S11_India MD_S110_India MD_S111_India MD_S112_India MD_S113_India MD_S114_India MD_S12_India MD_S13_India MD_S14_India MD_S15_India MD_S16_India MD_S17_India MD_S18_India MD_S19_India MD_S2_India MD_S20_India MD_S21_India MD_S22_India MD_S23_India MD_S24_India MD_S25_India MD_S26_India MD_S27_India MD_S28_India MD_S29_India MD_S3_India MD_S30_1_India MD_S30_2_India MD_S30_3_India MD_S30_4_India MD_S30_India MD_S31_India MD_S32_India MD_S33_India MD_S34_India MD_S35_India MD_S36_India MD_S37_India MD_S38_India MD_S39_India MD_S4_India MD_S40_India MD_S41_India MD_S42_India MD_S43_India MD_S44_India MD_S45_India MD_S46_India MD_S47_India MD_S48_India MD_S49_India MD_S5_India MD_S50_India MD_S51_India MD_S52_India MD_S53_India MD_S54_India MD_S55_India MD_S56_India MD_S57_India MD_S58_India MD_S59_India MD_S6_India MD_S60_India MD_S61_India MD_S62_India MD_S63_India MD_S64_India MD_S65_India MD_S69_India MD_S7_India MD_S70_India MD_S71_India MD_S72_India MD_S73_India MD_S74_India_1 MD_S74_India_2 MD_S75_India MD_S76_India MD_S77_India MD_S78_India MD_S79_India MD_S8_India MD_S80_India_1 MD_S80_India_2 MD_S81_India MD_S83_India MD_S84_India MD_S85_India MD_S86_India MD_S87_India MD_S88_India MD_S89_India MD_S9_India MD_S90_India MD_S91_India MD_S92_India MD_S93_India MD_S94_India MD_S95_India MD_S96_India MD_S97_India MD_S98_India MD_S99_India porewater salinity PushPoint Sampler SB_1_India SB_10_India SB_100_India SB_101_India SB_11_India SB_12_India SB_13_India SB_14_India SB_15_India SB_16_India SB_17_India SB_18_India SB_19_India SB_2_India SB_20_India SB_21_India SB_22_India SB_23_India SB_24_India SB_25_India SB_26_India SB_27_India SB_28_India SB_29_India SB_3_India SB_30_India SB_31_India SB_32_India SB_33_India SB_34_India SB_35_India SB_36_India SB_37_India SB_38_India SB_39_India SB_4_India SB_40_India SB_41_India SB_42_India SB_43_India SB_44_India SB_45_India SB_46_India SB_47_India SB_48_India SB_49_India SB_5_India SB_50_India SB_51_India SB_52_India SB_53_India SB_54_India SB_55_India SB_56_India SB_57_India SB_58_India SB_59_India SB_6_India SB_60_India SB_61_India SB_62_India SB_63_India SB_64_India SB_65_India SB_66_India SB_67_India SB_68_India SB_69_India SB_7_India SB_70_India SB_71_India SB_72_India SB_73_India SB_74_India SB_75_India SB_76_India SB_77_India SB_78_India SB_79_India SB_8_India SB_80_India SB_81_India SB_82_India SB_83_India SB_84_India SB_85_India SB_86_India SB_87_India SB_88_India SB_89_India SB_9_India SB_90_India SB_91_India SB_92_India SB_93_India SB_94_India SB_95_India SB_96_India SB_97_India SB_98_India SB_99_India Siali beach SK_100121_GER SK_100201_GER SK_100202_GER SK_100203_GER SK_100204_GER SK_100205_GER SK_100206_GER SK_100207_GER SK_100208_GER SK_100209_GER SK_100210_GER SK_100211_GER SK_100213_GER SK_100214_GER SK_100215_GER SK_100216_GER SK_100217_GER SK_100218_GER SK_100219_GER SK_100220_GER SK_100221_GER SK_100302_GER SK_100303_GER SK_100304_GER SK_100305_GER SK_100306_GER SK_100307_GER SK_100308_GER SK_100309_GER SK_100310_GER SK_100311_GER SK_100312_GER spatial heterogeneity Spiekeroog beach submarine groundwate discharge subterranean estuary PushPoint Sampler Multiparameter probe, WTW, Xylem Analytics Germany 2024-10-07 2026-03-23 Complete 19.857783 53.782292 7.709483 86.467634 0.5 m (DEPTH, sediment/rock) 0.5 m (DEPTH, sediment/rock) RETAKE DAM CDRmare - RETAKE: CO2 removal by alkalinity enhancement: potential, benefits and risks INPA INPA - AvH Insitute Partnership JNU-ZMT CDRmare Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 1078 data points text/tab-separated-values

This dataset provides high-resolution porewater salinity measurements used to investigate spatial variability within subterranean estuaries (STEs) across contrasting coastal settings. Field surveys were conducted at Marine Drive beach and Siali beach along the Odisha coast, India, and at Spiekeroog Beach, Germany. Sampling campaigns were performed during the post-monsoon season (October 2024) at Marine Drive and Siali beaches, during the pre-monsoon season (March 2026) at Marine Drive beach, and in June 2025 at Spiekeroog beach. Porewater was collected from the intertidal zone at 0.5 m sediment depth using a push-point sampler following meter-scale grid-based surveys to characterize lateral variations in fresh-saline mixing. Sampling locations were mapped using QField for QGIS connected via Bluetooth to a Trimble DA2 GNSS receiver with an active Catalyst subscription, enabling high-precision positioning and simultaneous recording of spatial coordinates with field measurements. Porewater salinity, electrical conductivity, and temperature were measured in situ using a WTW multiparameter probe (Xylem Analytics Germany). The measurements capture localized freshening zones and heterogeneous mixing patterns within STEs, highlighting the spatial complexity of fresh-saline mixing. This dataset supports the evaluation of lateral variability in SGD pathways and contributes to improved understanding of the spatial heterogeneity of STEs at the beach scale. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995958"! ** Elevation corrected with the Quasigeoid GCG2016/2023 from Bundesamt für Katrographie und Geodäsie (CC-BY 4.0)

https://cdrmare.de/en/ CDRmare https://retake.cdrmare.de/en/ RETAKE https://www.leibniz-zmt.de/en/research/research-projects/inpa.html#ges:orderby%3Dnewest%26searchword%3Dinpa%26searchphrase%3Dall%26page%3D1 INPA DIF 9.4 2026-07-14 2026-07-14