Rahman, Abdur; Wang, Liang-Chi; Kashima, Kaoru; Li, Hong-Chun; Chen, Huei-Fen; Yang, Tien-Nan (2025): Diatoms from DH-7B sediment core from the Dahu Lake, Ilan Plain [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982472, In: Rahman, A et al. (2025): Typhoon and climate history of northeastern Taiwan during mid to late Holocene: inferred through the Dahu Lake sediment core, Ilan Plain [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.982469
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Published: 2025-05-16 • DOI registered: 2025-06-14
Abstract:
A 35-meter-long sediment core (DH-7B) was retrieved from Dahu Lake using a stainless-steel pipe mounted on a floating platform. The core was subsampled at 5-cm intervals with 1-cm thickness for diatom, stable isotope, and trace element analyses. For diatom analysis, 0.5 g of dry sediment was treated with 32% H₂O₂ and 10% HCl. The cleaned material was mounted on slides using Wako mounting medium, and 300 diatom valves were identified and counted under an optical microscope at 1000× magnification.
Coverage:
Latitude: 24.739200 * Longitude: 121.689300
Date/Time Start: 2008-01-01T14:00:00 * Date/Time End: 2008-01-01T14:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 34.605 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Wang, Liang-Chi | Geocode | |
| 2 | AGE | Age | ka BP | Wang, Liang-Chi | Geocode | |
| 3 | Diatoms, planktic | Diatom plank | % | Wang, Liang-Chi | Counting, diatoms | optical microscope at 1000× magnification |
| 4 | Diatoms, benthic | Diatom benthic | % | Wang, Liang-Chi | Counting, diatoms | optical microscope at 1000× magnification |
| 5 | Diatoms, epiphytic | Diatom epiphyt | % | Wang, Liang-Chi | Counting, diatoms | optical microscope at 1000× magnification |
| 6 | Diatom valves, per unit sediment mass | Diatom valves/sed | #/g | Wang, Liang-Chi | Counting, diatoms | optical microscope at 1000× magnification |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
656 data points