Nizou, Jean; Demory, François (2015): Magnetic parameters of the Bay of Seine seafloor dried grab samples at t0 (i.e. from June to September 2011), t1 (i.e. in March 2013), t2 (i.e. in June 2013) and t3 (i.e. in September 2013) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.830268, In supplement to: Nizou, Jean; Demory, François; Dubrulle-Brunaud, Carole (2016): Monitoring of dredged-dumped sediment dispersal off the Bay of the Seine (northern France) using environmental magnetism. Comptes Rendus Geoscience, 348(6), 451-461, https://doi.org/10.1016/j.crte.2015.02.005
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Coverage:
Median Latitude: 49.457550 * Median Longitude: -0.107245 * South-bound Latitude: 49.417382 * West-bound Longitude: -0.162164 * North-bound Latitude: 49.496335 * East-bound Longitude: -0.023729
Event(s):
Comment:
Determination of Anhysteretic Remanent Magnetization (ARM), Saturation Isothermal Remanent Magnetization (SIRM) and Isothermal Remanent Magnetization (IRM) was performed with a superconducting rock magnetometer SRM760R (2G enterprises). The ARM is an artificial magnetization gained in an alternating magnetic field of 100 mT superimposed on a steady field of 50 µT, which is comparable to the strength of the geomagnetic field. The ARM is afterward subject to demagnetization at 30 mT (ARM_30 ). The SIRM was acquired at 3 T and the IRM at 0.3 T in the opposite direction using a pulse magnetizer MMPM9 (Magnetic Measurements ltd). The S-ratio was calculated after the formula 0.5(1-IRM/SIRM) and allows for an estimation of the relative abundance of high coercivity minerals. TheS-ratio comesclose to 1when low-coercive mineralssuch a as magnetite dominate the signal,and decreaseswith increasing amount of high-coercive mineralssuch as hematite (Bloemendal et al., 1992).The Hard Isothermal Remanent Magnetization (HIRM) was calculated after the formula (SIRM-IRM)/2 and allows for an estimation of the absolute concentration of high coercivity minerals (e.g. hematite). ARM/SIRM is used as an estimator of the relative magnetic grain size. ARM_30 /ARM is also used as a magnetic grain-size estimator since samples display a constant mineralogy.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Nizou, Jean | |||
| 3 | Dry mass | Dry m | g | Nizou, Jean | at t0 | |
| 4 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | at t0 |
| 5 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | ARM30, at t0 |
| 6 | Saturation isothermal remanent magnetization | SIRM | 10-3 A m2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | at t0 |
| 7 | Isothermal Remanent Magnetization | IRM | 10-3 Am2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | -0.3T, at t0 |
| 8 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | at t0 | |
| 9 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | ARM30, at t0 | |
| 10 | Saturation isothermal remanent magnetization | SIRM | 10-6 A m2/kg | Nizou, Jean | SIRM3T, at t0 | |
| 11 | Isothermal remanent magnetization, Intensity, per unit mass | Inten IRM | 10-6 A*m2/kg | Nizou, Jean | IRM-0.3T, at t0 | |
| 12 | S-ratio (hematite/magnetite) | S-r | Nizou, Jean | at t0 | ||
| 13 | Hard isothermal remanent magnetization, Intensity, per unit mass | Inten HIRM | 10-6 A*m2/kg | Nizou, Jean | at t0 | |
| 14 | ARM/ARM | ARM/ARM | Nizou, Jean | ARM30/ARM, at t0 | ||
| 15 | Anhysteretic remanent magnetization/saturation isothermal remanent magnetization ratio | ARM/SIRM | Nizou, Jean | at t0 | ||
| 16 | Dry mass | Dry m | g | Nizou, Jean | at t1 | |
| 17 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | at t1 |
| 18 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | ARM30, at t1 |
| 19 | Saturation isothermal remanent magnetization | SIRM | 10-3 A m2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | SIRM3T, at t1 |
| 20 | Isothermal Remanent Magnetization | IRM | 10-3 Am2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | IRM-0.3T, at t1 |
| 21 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | at t1 | |
| 22 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | ARM30, | |
| 23 | Saturation isothermal remanent magnetization | SIRM | 10-6 A m2/kg | Nizou, Jean | SIRM3T, at t1 | |
| 24 | Isothermal remanent magnetization, Intensity, per unit mass | Inten IRM | 10-6 A*m2/kg | Nizou, Jean | IRM-0.3T, at t1 | |
| 25 | S-ratio (hematite/magnetite) | S-r | Nizou, Jean | at t1 | ||
| 26 | Hard isothermal remanent magnetization, Intensity, per unit mass | Inten HIRM | 10-6 A*m2/kg | Nizou, Jean | at t1 | |
| 27 | ARM/ARM | ARM/ARM | Nizou, Jean | ARM30/ARM, at t1 | ||
| 28 | Anhysteretic remanent magnetization/saturation isothermal remanent magnetization ratio | ARM/SIRM | Nizou, Jean | at t1 | ||
| 29 | Dry mass | Dry m | g | Nizou, Jean | at t2 | |
| 30 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | at t2 |
| 31 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | ARM30, at t2 |
| 32 | Saturation isothermal remanent magnetization | SIRM | 10-3 A m2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | at t2 |
| 33 | Isothermal Remanent Magnetization | IRM | 10-3 Am2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | IRM-0.3T, at t2 |
| 34 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | at t2 | |
| 35 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | ARM30, at t2 | |
| 36 | Saturation isothermal remanent magnetization | SIRM | 10-6 A m2/kg | Nizou, Jean | SIRM3T, at t2 | |
| 37 | Isothermal remanent magnetization, Intensity, per unit mass | Inten IRM | 10-6 A*m2/kg | Nizou, Jean | IRM-0.3T, at t2 | |
| 38 | S-ratio (hematite/magnetite) | S-r | Nizou, Jean | at t2 | ||
| 39 | Hard isothermal remanent magnetization, Intensity, per unit mass | Inten HIRM | 10-6 A*m2/kg | Nizou, Jean | at t2 | |
| 40 | ARM/ARM | ARM/ARM | Nizou, Jean | at t2 | ||
| 41 | Anhysteretic remanent magnetization/saturation isothermal remanent magnetization ratio | ARM/SIRM | Nizou, Jean | at t2 | ||
| 42 | Dry mass | Dry m | g | Nizou, Jean | at t3 | |
| 43 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | at t3 |
| 44 | Anhysteretic Remanent Magnetization | ARM | 10-3 Am2 | Nizou, Jean | Superconducting rock magnetometer SRM760R (2G enterprises) | ARM30, at t3 |
| 45 | Saturation isothermal remanent magnetization | SIRM | 10-3 A m2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | SIRM3Tat t3 |
| 46 | Isothermal Remanent Magnetization | IRM | 10-3 Am2 | Nizou, Jean | Magnetometer SRM760R (2G enterprises); pulse magnetizer MMPM9 | IRM-0.3T, at t3 |
| 47 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | at t3 | |
| 48 | Anhysteretic remanent magnetization, Intensity, per unit mass | Inten ARM | 10-6 A*m2/kg | Nizou, Jean | ARM30, at t3 | |
| 49 | Saturation isothermal remanent magnetization | SIRM | 10-6 A m2/kg | Nizou, Jean | SIRM3T, at t3 | |
| 50 | Isothermal remanent magnetization, Intensity, per unit mass | Inten IRM | 10-6 A*m2/kg | Nizou, Jean | IRM-0.3T, at t3 | |
| 51 | S-ratio (hematite/magnetite) | S-r | Nizou, Jean | at t3 | ||
| 52 | Hard isothermal remanent magnetization, Intensity, per unit mass | Inten HIRM | 10-6 A*m2/kg | Nizou, Jean | at t3 | |
| 53 | ARM/ARM | ARM/ARM | Nizou, Jean | ARM30/ARM, at t3 | ||
| 54 | Anhysteretic remanent magnetization/saturation isothermal remanent magnetization ratio | ARM/SIRM | Nizou, Jean | at t3 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1724 data points