Description: Sediment cores were recovered using a hand-held Cobra Pro (Atlas Copco) core drilling system with a 60 mm diameter open corer. One-meter segments were retrieved and assessed in the field for sedimentological features, including estimations of grain size, carbonate content, humus content, and redox features (AG Boden 2005, 2024). Colour descriptions were carried out using the Munsell Soil Color Chart. The exact positions of the drilling points were recorded using a differential GPS device (TOPCON HiPer II). The cores were photographed, documented and sampled at 5–10 cm intervals for subsequent laboratory analyses. Bulk samples from five selected cores (RK1, RK3, RK13, RK15, RK17) were freeze-dried, sieved (2 mm), and weighed. Total carbon (TC), total nitrogen (TN), and total sulfur (TS) contents were measured using a CNS analyzer (Vario EL cube, Elementar). Inorganic carbon (TIC) was determined using calcimeter measurements (Scheibler method, Eijkelkamp). Organic carbon (TOC) was calculated as TOC = TC − TIC. For the grain size analyses, sediment samples were first sieved to <2 mm and subsamples of 10 g were treated with 50 ml of 35% hydrogen peroxide (H₂O₂) and gently heated to remove organic matter. Following this, 10 ml of 0.4 N sodium pyrophosphate solution (Na₄P₂O₇) was added to disperse the particles, and the suspension was subjected to ultrasonic treatment for 45 minutes. The sand fraction was analysed by dry sieving and classified into four size classes: coarse sand (2000–630 µm), medium sand (630–200 µm), fine sand (200–125 µm), and very fine sand (125–63 µm). Finer fractions were determined using X-ray granulometry (XRG) with a SediGraph III 5120 (Micromeritics). These included coarse silt (63–20 µm), medium silt (20–6.3 µm), fine silt (6.3–2.0 µm), coarse clay (2.0–0.6 µm), medium clay (0.6–0.2 µm), and fine clay (<0.2 µm).
Global identifier:
Doi(
"10.1594/PANGAEA.983887",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Carbon, inorganic, total",
"Carbon, organic, total",
"Carbon, total",
"Carbonates",
"Color code HLS-system",
"Comment",
"Depth, bottom/max",
"Depth, top/min",
"Error, relative",
"Event label",
"Grain size classification",
"Humus content",
"Nitrogen, total",
"Penetration depth",
"Redoximorphic features",
"Sample ID",
"Size fraction 0.0063-0.002 mm, fine silt",
"Size fraction 0.020-0.0063 mm, medium silt",
"Size fraction 0.063-0.020 mm, coarse silt",
"Size fraction 0.125-0.064 mm",
"Size fraction 0.200-0.125 mm, fine sand",
"Size fraction 0.63-0.2 µm, medium clay",
"Size fraction 0.630-0.200 mm, medium sand",
"Size fraction 2-0.63 µm, coarse clay",
"Size fraction 2.000-0.630 mm, coarse sand",
"Size fraction < 0.2 µm, fine clay",
"Soil horizon",
"Sulfur, total",
"Texture",
],
methods: [
"Calcimeter, Royal Eijkelkamp, 08.53",
"Carbon and nitrogen and sulfur (CNS) element analyzer, Elementar, Vario EL Cube",
"Dry sieving",
"Munsell soil color charts (Munsell Color., 2010)",
"Particle Size Analyser, Micrometrics, SEDIGRAPH III 5120",
],
},
)
Origins: /Wissenschaft/PANGAEA
Tags: Gesamter organischer Kohlenstoff ? Seen ? Sand ? Brandenburg ? Kohlenstoff ? Deutschland ? Gesamtkohlenstoff ? Gesamtstickstoff ? Flussaue ? Siebanalyse ? Humusgehalt ? Bodenhorizont ? Daten ? Korngröße ? Ultraschall ? Sediment ? Klassifikation ? Driving cores ? Grain-size analyses ? Lake Gülpe ?
Bounding boxes: 12.2106291° .. 12.2184664° x 52.7280079° .. 52.7358851°
License: cc-by/4.0
Language: Englisch/English
Issued: 2025-08-07
Modified: 2025-08-07
Time ranges: 2023-06-13 - 2025-07-14
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