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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 [dataset]. 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):
Lake_Chala * Latitude: -3.316670 * Longitude: 37.700000 * Date/Time Start: 2010-08-31T00:00:00 * Date/Time End: 2015-01-31T00:00:00 * Elevation: 880.0 m * Location: Lake Chala, East Africa * Method/Device: Multiple investigations (MULT)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
MonthMonthPeterse, Francien
Date/time startDate/time startPeterse, Francien
Date/time endDate/time endPeterse, Francien
DateDatePeterse, FrancienMedian day deployment
Duration, number of daysDurationdaysPeterse, FrancienDays collecting
Total mass, flux per dayTot mass fluxmg/m2/dayPeterse, Francien
Branched glycerol dialkyl glycerol tetraether, flux, IabrGDGT flux Iang/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
Branched glycerol dialkyl glycerol tetraether, flux, IbbrGDGT flux Ibng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
Branched glycerol dialkyl glycerol tetraether, flux, IcbrGDGT flux Icng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
10 Branched glycerol dialkyl glycerol tetraether, flux, IIabrGDGT flux IIang/m2/dayPeterse, FrancienUltra-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 IIang/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
12 Branched glycerol dialkyl glycerol tetraether, flux, IIbbrGDGT flux IIbng/m2/dayPeterse, FrancienUltra-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 IIbng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
14 Branched glycerol dialkyl glycerol tetraether, flux, IIcbrGDGT flux IIcng/m2/dayPeterse, FrancienUltra-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 IIcng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
16 Branched glycerol dialkyl glycerol tetraether, flux, IIIabrGDGT flux IIIang/m2/dayPeterse, FrancienUltra-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 IIIang/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
18 Branched glycerol dialkyl glycerol tetraether, flux, IIIbbrGDGT flux IIIbng/m2/dayPeterse, FrancienUltra-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 IIIbng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
20 Branched glycerol dialkyl glycerol tetraether, flux, IIIcbrGDGT flux IIIcng/m2/dayPeterse, FrancienUltra-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 IIIcng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
22 Isomer ratioIRPeterse, Francien
23 Hexamethylated branched glycerol dialkyl glycerol tetraether, flux, sumbrGDGT flux 6-meng/m2/dayPeterse, FrancienUltra-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, sumbrGDGT flux 5-meng/m2/dayPeterse, FrancienUltra-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, sumbrGDGT flux 4-meng/m2/dayPeterse, FrancienUltra-high-performance liquid chromatography (UHPLC; Agilent 1260 Infinity) coupled to a single quadrupole mass detector (Agilent 6130)
Size:
1325 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Month

Date/time start

Date/time end

Date
(Median day deployment)

Duration [days]
(Days collecting)

Tot mass flux [mg/m2/day]

brGDGT flux Ia [ng/m2/day]

brGDGT flux Ib [ng/m2/day]

brGDGT flux Ic [ng/m2/day]
10 
brGDGT flux IIa [ng/m2/day]
11 
brGDGT flux IIa [ng/m2/day]
12 
brGDGT flux IIb [ng/m2/day]
13 
brGDGT flux IIb [ng/m2/day]
14 
brGDGT flux IIc [ng/m2/day]
15 
brGDGT flux IIc [ng/m2/day]
16 
brGDGT flux IIIa [ng/m2/day]
17 
brGDGT flux IIIa [ng/m2/day]
18 
brGDGT flux IIIb [ng/m2/day]
19 
brGDGT flux IIIb [ng/m2/day]
20 
brGDGT flux IIIc [ng/m2/day]
21 
brGDGT flux IIIc [ng/m2/day]
22 
IR
23 
brGDGT flux 6-me [ng/m2/day]
24 
brGDGT flux 5-me [ng/m2/day]
25 
brGDGT flux 4-me [ng/m2/day]
Sep-102010-08-312010-10-032010-09-16332693.4156.351.45.111.1356.30.0120.10.01.83.193.40.05.90.00.00.976080642577.414.1212.8
Oct-102010-10-032010-10-312010-10-1728726.752.29.81.85.8104.72.29.30.30.81.133.60.00.50.00.00.940453121148.99.463.8
Nov-102010-10-312010-11-302010-11-15302446.920.82.10.51.382.40.61.70.00.00.038.50.00.00.00.00.984895850122.61.923.4
Dec-102010-11-302010-12-312010-12-15311446.6204.117.43.45.6701.34.213.30.41.42.5278.31.70.60.00.00.985561243994.914.6224.9
Jan-112010-12-312011-01-312011-01-15311237.3407.955.013.039.3973.614.360.62.15.49.4450.93.05.30.01.40.9565047431497.368.1475.9
Feb-112011-01-312011-02-282011-02-1428600.784.920.12.68.4213.617.118.70.71.02.792.41.21.10.00.00.915838337326.930.0107.6
Mar-112011-02-282011-03-312011-03-1531473.1516.4229.426.356.61333.8183.5257.67.17.216.1519.47.112.50.01.30.8874351752131.8270.4772.1
Apr-112011-03-312011-04-302011-04-1530346.6126.038.65.020.3182.024.245.81.51.03.270.31.02.20.00.00.856901391301.350.3169.6
May-112011-04-302011-05-312011-05-1531296.014.76.40.72.930.24.98.80.00.00.814.20.00.50.00.00.86062556853.78.721.7
Jun-112011-05-312011-06-302011-06-1530352.3104.558.17.835.7153.435.450.91.73.07.259.01.02.30.00.00.767984989268.681.1170.5
Jul-112011-06-302011-07-312011-07-1531412.1160.553.54.917.9207.819.861.41.02.84.458.60.72.60.00.40.883931965333.643.8218.9
Aug-112011-07-312011-08-302011-08-1530537.7159.451.16.127.0227.117.780.51.13.54.773.80.95.30.00.80.883975772390.951.3216.6
Sep-112011-08-302011-09-292011-09-1430530.8123.420.23.314.7103.23.141.40.61.32.339.70.03.50.00.50.901349370189.620.8146.9
Oct-112011-09-292011-10-302011-10-1431317.196.621.42.78.7108.13.440.10.51.51.335.50.02.80.00.40.931306695188.513.9120.7
Nov-112011-10-302011-11-302011-11-14311732.1173.8125.019.912.2242.49.2242.50.026.63.3130.90.027.90.07.50.964812027677.724.7318.7
Dec-112011-11-302011-12-292011-12-1429805.067.749.58.07.490.43.593.00.08.81.735.90.08.60.02.30.950157438239.112.5125.2
Jan-122011-12-292012-01-302012-01-1432837.1257.193.710.728.8572.89.5161.00.711.310.8241.91.513.20.02.90.9513192091003.151.3361.4
Feb-122012-01-302012-02-292012-02-14301063.3277.5105.113.924.8587.414.9176.41.213.89.3244.91.915.80.04.00.9523686151042.452.1396.6
Mar-122012-02-292012-03-302012-03-1530385.6137.843.45.221.1245.911.452.60.54.95.895.71.06.90.01.90.910916182408.039.9186.4
Apr-122012-03-302012-05-222012-04-2553802.3481.1111.814.394.8872.740.7113.61.86.225.4332.72.77.20.01.30.8896325401333.8165.5607.2
May-122012-05-222012-05-312012-05-269891.4118.472.310.67.9215.28.0160.60.013.31.6107.91.319.40.04.70.965285822521.118.7201.3
Jun-122012-05-312012-06-302012-06-1530405.7181.7156.330.23.6174.91.5182.60.019.20.950.50.39.30.02.90.985873233439.46.3368.2
Jul-122012-06-302012-07-312012-07-1531378.2122.194.530.85.6136.63.9104.80.38.01.141.20.46.00.01.40.963575112298.011.3247.4
Aug-122012-07-312012-08-312012-08-1531868.5241.3100.59.529.5194.019.399.90.76.74.950.80.77.10.01.20.867034868359.755.2351.3
Sep-122012-08-312012-09-302012-09-1530659.3199.9105.019.13.4501.51.4107.80.012.00.7184.31.06.10.01.90.992099849813.76.5323.9
Oct-122012-09-302012-10-302012-10-1530736.2142.950.77.64.2418.42.155.60.05.70.9152.50.83.50.01.10.987555673636.88.0201.2
Nov-122012-10-302012-12-172012-11-2348729.9513.4119.023.611.41763.47.5119.90.415.42.5710.53.86.80.03.20.9902792802619.225.7656.0
Dec-122012-12-172012-12-302012-12-23131019.7207.788.819.32.7595.42.0107.00.013.60.0248.51.49.90.03.00.993865717977.26.0315.9
Jan-132012-12-302013-01-312013-01-1532482.0239.568.016.27.6577.28.4136.10.515.22.3201.81.111.70.02.20.979366692944.219.9323.7
Feb-132013-01-312013-02-272013-02-1327525.430.48.21.31.065.50.716.90.01.60.024.20.01.80.00.40.985480404110.41.639.9
Mar-132013-02-272013-03-302013-03-1431516.5229.750.37.27.2558.99.785.70.57.02.1191.51.011.40.02.50.976586466856.920.5287.1
Apr-132013-03-302013-04-302013-04-1431460.9687.3211.715.190.51148.851.6310.72.210.917.8417.61.818.70.02.40.9209850781909.1163.8914.1
May-132013-04-302013-05-302013-05-1530445.9733.2199.013.694.61502.665.5260.62.27.215.1556.14.912.20.00.00.9277005202338.7182.3945.7
Jun-132013-05-302013-07-062013-06-1737307.5221.280.67.512.1366.810.6147.30.79.72.7127.81.010.00.01.50.960775339663.327.1309.4
Jul-132013-07-062013-07-312013-07-1825377.4242.392.09.513.6383.617.1162.80.810.23.1133.41.211.70.01.40.951582983703.135.8343.8
Aug-132013-07-312013-08-312013-08-1531716.9974.3372.827.9190.91591.5115.0531.24.020.444.4491.56.441.30.03.00.8813391882678.9360.71375.0
Sep-132013-08-312013-10-012013-09-15311571.097.737.52.826.6170.813.341.20.81.26.649.30.04.80.00.00.849438948267.347.4138.0
Oct-132013-10-012013-11-012013-10-1631559.845.817.12.411.752.36.214.50.41.02.314.40.01.10.00.00.80179755583.420.665.3
Nov-132013-11-012013-11-302013-11-1529411.4324.5174.221.170.3568.3214.750.57.52.513.8160.16.14.10.50.50.715277325786.1312.9519.8
Dec-132013-11-302014-01-062013-12-18371091.1281.2198.120.987.2451.9225.937.77.11.313.7119.96.12.80.00.00.643422357613.6340.0500.2
Jan-142014-01-062014-01-292014-01-1723407.9232.3165.719.774.1323.5208.132.97.31.812.780.66.02.90.00.40.589171655442.0308.2417.6
Feb-142014-01-292014-03-052014-02-1535363.0145.6108.311.549.1172.5128.322.54.10.87.649.03.52.00.00.00.561612915246.8192.7265.4
Mar-142014-03-052014-04-042014-03-2030133.7238.0257.630.1108.7285.4342.842.911.82.019.270.99.75.10.60.40.452110227406.7492.9525.7
Apr-142014-04-042014-04-292014-04-1625327.1145.7102.29.662.4216.3105.048.413.214.114.847.90.00.00.00.00.625787431326.7195.4257.5
May-142014-04-292014-06-012014-05-1533212.8165.385.68.743.3285.589.435.63.11.18.587.63.17.80.00.00.738967587417.6147.5259.6
Jun-142014-06-012014-06-302014-06-1529252.950.238.64.030.060.736.920.61.30.95.717.81.33.70.00.00.579796715103.875.292.8
Jul-142014-06-302014-07-312014-07-1531632.595.875.37.667.9120.268.552.12.42.513.843.72.613.40.00.70.599692779232.7155.3178.7
Aug-142014-07-312014-09-022014-08-16331800.872.244.24.262.582.234.632.51.31.711.625.51.44.70.00.00.568234708146.6111.4120.6
Sep-142014-09-022014-09-292014-09-15272660.1208.894.15.964.8229.922.796.00.03.310.856.81.34.40.00.00.796667872390.499.6308.7
Oct-142014-09-292014-10-292014-10-14301063.9154.929.54.116.3518.311.527.90.72.13.6244.81.31.90.00.50.959518632795.333.6188.4
Nov-142014-10-292014-12-122014-11-20441014.9535.127.03.70.03156.68.638.90.02.02.61482.28.62.90.00.00.9957690324682.619.9565.8
Dec-142014-12-122015-01-042014-12-2323867.5378.529.24.17.41577.56.549.30.71.92.3631.83.52.30.00.00.9911019172262.820.3411.7
Jan-152015-01-042015-01-312015-01-17271101.8611.385.411.836.21559.728.6133.92.72.97.5622.43.96.40.00.60.9671928462325.878.9708.4