Hole C0024C, Expedition 358

Lineage

This URL provides the access to the most recent output from the database. The output is being overwritten as often as possible.

This data set was output from J-CORES database by using its complete Bulk Export function Version 1.9.9 from 2019-09-11T04:28:25Z till 2019-09-11T04:28:42Z. The specification of the outputs is available to be referred. Bulk Export gives a file bulk.csv with various attachment files (e.g. image files). Files bulk-something.csv are generated by picking some kinds of data from bulk.csv. Files something.zip consist of bulk-something.csv and related attachment files. Files bulk-something.csv are in character encoding UTF-8 with line ending characters CRLF. The database has a flexibility to store numerical/text values and attached files for user-defined parameters, which are output into User-Defined Parameter column group in bulk.csv.

Data file index

Parameter definitions

The user-defined parameters are listed with their definitions as the followings.

X-ray CT scanning

X-ray CT scanned images for core sections. The right-handed coordinate system is applied to each core section as the followings. Y axis is from the working half toward the archive half. Z axis is from the core bottom toward the top. (x, y, z) = (0, 0, 0) at the center of the top of the core section.

X-ray CT scanning::coronal image

The cross section at the boundary of the working and archive halves of the core section, looking the archive half side. In other words, the x-z plane (y = 0), looking to the negative y. The image is created by compiling the series of axial images, at each of which z is a constant. The file is formatted in DICOM.

X-ray CT scanning::top margin [pixels]

Height of the margin at the top of the image. Not always integer. number of pixels in raster graphics

X-ray CT scanning::bottom margin [pixels]

Height of the margin at the bottom of the image. Not always integer. number of pixels in raster graphics

X-ray CT scanning::each side margin [pixels]

Width of the margin at each of the right and the left of the image. Not always integer. number of pixels in raster graphics

X-ray CT scanning::comment on measurement

Comment on the measurement, the object (i.e. samples, for which the measurement is conducted) and/or errors that cannot be corrected.

split section image

Images for split core sections. At the top and the right there are no margins.

split section image::line scanned image

A surface image acquired by a line scan camera.

split section image::bottom margin [pixels]

Height of the margin at the bottom of the image. Not always integer. number of pixels in raster graphics

split section image::left margin [pixels]

Width of the margin at the left of the image. Not always integer. number of pixels in raster graphics

split section image::comment on measurement

Comment on the measurement, the object (i.e. samples, for which the measurement is conducted) and/or errors that cannot be corrected.

MSCL; section

Measurements for core sections by using a Multi Sensor Core Logger (MSCL).

MSCL; section::section half

Whether whole-round core sections or split halves of core sections and which side of split halves, for which the measurement is conducted. The values for this parameter have to be chosen from `whole-round', `archive', `working' and `either half'.

MSCL; section::GRA density: horizontal sensor direction [g/cm3]

Density calculated with Gamma Ray Attenuation (GRA) method. The sensor, a set of an RI source (137Cs) and a scintilation detector, is attached in the horizontal direction on the track of the Multi Sensor Core Logger (i.e., gamma ray beam passes through at the split point between working and archive halves). gram per cubic centi-meter

MSCL; section::magnetic susceptibility: loop sensor, 80 mm (x0.00001 SI)

Volume magnetic susceptibility in SI units by using a MS2C core logging sensor, Bartington Instruments Ltd. Loop internal diameter of the sensor is 80 mm. The values are derived by multiplying the actual values by 100000. dimensionless quantity

MSCL; section::P-wave velocity: ARC transducer, 230 kHz [m/s]

Measured P-wave velocity. The P-wave transducer is an oil filled acoustinc rolling contract (ARC) transducer. A set of the transmitter and a receiver, is attached in the horizontal direction on the track of the Multi Sensor Core Logger (i.e., P-wave passes through at the split point between working and archive halves). P-wave pulse which is an ultrasonic compressional pulse generated by a piezoelectric crystal is 230 kHz. meter per second

MSCL; section::P-wave signal amplitude: ARC transducer, 230 kHz

Measured P-wave signal amplitude. The P-wave transducer is an oil filled acoustinc rolling contract (ARC) transducer. A set of the transmitter and a receiver, is attached in the horizontal direction on the track of the Multi Sensor Core Logger (i.e., P-wave passes through at the split point between working and archive halves). P-wave pulse which is an ultrasonic compressional pulse generated by a piezoelectric crystal is 230 kHz. dimensionless quantity

MSCL; section::electrical resistivity [ohm m]

Measured electrical resistivity. ohm by meter

MSCL; section::natural gamma radiation: detector set #1, 80 mm [CPS]

Counts per seconds of detected gamma ray photons. This count is a total of four scintillation detectors. Each of the four detectors is combined with a multichannel analyser. They are attached in a cross shape on a central lead cube which is on the track of the Multi Sensor Core Logger. Serial number of the each detector is; the upper side (a detector at the direction of 12 o'clock from the view in the core movement direction) is 04L033, the right side (at 3 o'clock) is 04L028, the lower side (at 6 o'clock) is 04L034, and the left side (at 9 o'clock) is 04L041. The aperture of the central lead cube is 80 mm. counts per second

superconducting rock magnetometer; section

Measurements by using a superconducting rock magnetometer for continuous halves of core sections.

superconducting rock magnetometer; section::alternating-field demagnetization level [mT]

Level of applied alternating-field demagnetization. milli-tesla

superconducting rock magnetometer; section::magnetic intensity [A/m]

Intensity of magnetization per unit volume. This parameter is obtained by normalizing the magnetic moments by the sample volume for a discrete sample or by the effective sample volume for a continuous section half. ampere per meter

superconducting rock magnetometer; section::magnetic inclination [degree]

Angle of the magnetic dip from the horizontal plane. This value can be between -90=<, =<90 degree. -90 and 90 degrees indicate the direction toward -Z and +Z respectively in the ODP orientation system (Handbook for shipboard paleomagnetists; ODP Tech. Note, 34, 2007). degree

superconducting rock magnetometer; section::magnetic declination [degree]

Angle of the magnetic azimuth on the horizontal plane. This value can be between 0=<, <360 degree. 0, 90, and 180 degrees indicate the direction toward +X, +Y, and -X respectively in the ODP orientation system (Handbook for shipboard paleomagnetists; ODP Tech. Note, 34, 2007). degree

superconducting rock magnetometer; section::section half

Whether whole-round core sections or split halves of core sections and which side of split halves, for which the measurement is conducted. The values for this parameter have to be chosen from `whole-round', `archive', `working' and `either half'.

downhole measurement

Measurements by using downhole tools.

downhole measurement::APCT3 result

Measurement results of a downhole tool APCT3.

downhole measurement::comment on measurement

Comment on the measurement, the object (i.e. samples, for which the measurement is conducted) and/or errors that cannot be corrected.

See also