Peterse, Francien; van Bree, Loes G J; Baxter, Allix J; De Crop, Wannes; van Grinsven, Sigrid; Villanueva, Laura; Verschuren, Dirk; Sinninghe Damsté, Jaap S (2020): Concentration of branched glycerol dialkyl glycerol tetraethers in settling particles of Lake Chala from September 2010- January 2015. PANGAEA, https://doi.org/10.1594/PANGAEA.922780
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Abstract:
Settling particles in the water column of Lake Chala, a small (4.2 km2), deep (~90 m), and permanently stratified tropical crater lake at ~880 m above sea level in East Africa (3°19'S, 37°42'E) were collected monthly at 35 m water depth from August 2010 to January 2015 from mid-lake position. The collected material was allowed to settle and stored frozen after decantation of excess water. Prior to analysis, the samples were thawed, filtered over pre-combusted glass fibre filters, and the frozen and freeze dried. Bulk mass flux is expressed as mg m-2 d-1. The concentration of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in the settling particles was analyzed using ultra high performance liquid chromatography-mass spectrometry, separating 5-methyl and 6-methyl brGDGT isomers.
Related to:
van Bree, Loes G J; Peterse, Francien; Baxter, Allix J; De Crop, Wannes; van Grinsven, Sigrid; Villanueva, Laura; Verschuren, Dirk; Sinninghe Damsté, Jaap S (2020): Seasonal variability and sources of in situ brGDGT production in a permanently stratified African crater lake. Biogeosciences, 17(21), 5443-5463, https://doi.org/10.5194/bg-17-5443-2020
Coverage:
Latitude: -3.316670 * Longitude: 37.700000
Date/Time Start: 2010-08-31T00:00:00 * Date/Time End: 2015-01-31T00:00:00
Minimum Elevation: 880.0 m * Maximum Elevation: 880.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Month | Month | Peterse, Francien | |||
| 2 | Date/time start | Date/time start | Peterse, Francien | |||
| 3 | Date/time end | Date/time end | Peterse, Francien | |||
| 4 | Date | Date | Peterse, Francien | Median day deployment | ||
| 5 | Duration, number of days | Duration | days | Peterse, Francien | Days collecting | |
| 6 | Total mass, flux per day | Tot mass flux | mg/m2/day | Peterse, Francien | ||
| 7 | Branched glycerol dialkyl glycerol tetraether, flux, Ia | brGDGT flux Ia | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 8 | Branched glycerol dialkyl glycerol tetraether, flux, Ib | brGDGT flux Ib | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 9 | Branched glycerol dialkyl glycerol tetraether, flux, Ic | brGDGT flux Ic | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 10 | Branched glycerol dialkyl glycerol tetraether, flux, IIa | brGDGT flux IIa | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 11 | Branched glycerol dialkyl glycerol tetraether, flux, IIa' | brGDGT flux IIa | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 12 | Branched glycerol dialkyl glycerol tetraether, flux, IIb | brGDGT flux IIb | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 13 | Branched glycerol dialkyl glycerol tetraether, flux, IIb' | brGDGT flux IIb | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 14 | Branched glycerol dialkyl glycerol tetraether, flux, IIc | brGDGT flux IIc | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 15 | Branched glycerol dialkyl glycerol tetraether, flux, IIc' | brGDGT flux IIc | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 16 | Branched glycerol dialkyl glycerol tetraether, flux, IIIa | brGDGT flux IIIa | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 17 | Branched glycerol dialkyl glycerol tetraether, flux, IIIa' | brGDGT flux IIIa | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 18 | Branched glycerol dialkyl glycerol tetraether, flux, IIIb | brGDGT flux IIIb | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 19 | Branched glycerol dialkyl glycerol tetraether, flux, IIIb' | brGDGT flux IIIb | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 20 | Branched glycerol dialkyl glycerol tetraether, flux, IIIc | brGDGT flux IIIc | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 21 | Branched glycerol dialkyl glycerol tetraether, flux, IIIc' | brGDGT flux IIIc | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 22 | Isomer ratio | IR | Peterse, Francien | |||
| 23 | Hexamethylated branched glycerol dialkyl glycerol tetraether, flux, sum | brGDGT flux 6-me | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 24 | Pentamethylated branched glycerol dialkyl glycerol tetraether, flux, sum | brGDGT flux 5-me | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) | |
| 25 | Tetramethylated branched glycerol dialkyl glycerol tetraether, flux, sum | brGDGT flux 4-me | ng/m2/day | Peterse, Francien | Ultra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
1325 data points