ChangeLog

On August 5, 2017, the moratorium of Expedition 365 expired and the data were unlocked.

On January 29, 2015, the moratorium of Expedition 348 expired and the data were unlocked for Holes C0002F, M, N and P).

In February, 2014, data of Expedition 348 were made available with a password protection (Holes C0002F, M, N and P).

On January 13, 2014, the moratorium of Expedition 338 expired and the data were unlocked for Holes C0002F, H, I, J, K, L, C0012H, C0018B, C0021A, B, C0022A and B.

In November, 2013, borehole observatory data of Expedition 343 were additionally made available (Hole C0019D).

On September 30, 2013, the moratorium of Expedition 337 expired and the data were unlocked for Hole C0020A.

On July 19, 2013, the moratorium of Expedition 343 expired and the data were unlocked for Holes C0019A, B, C, D and E.

In July, 2013, it was found that values of a parameter `Core initial recovery (%)' had been wrong for the following 32 cores. Each of the values had been 0.01 % lower than each of the correct values due to a bug of J-CORES Version 1.8.18 and before to mis-round computed recoveries.

It was confirmed that the values were correct in web site http://kcc-iodp-data.jamstec.go.jp.

In June, 2013, another web site http://kcc-iodp-data.jamstec.go.jp was opened in order to distribute the curatorial records for the materials of Deep Sea Drilling Project (DSDP), Ocean Drilling Program (ODP) and Integrated Ocean Drilling Program stored in Kochi Core Center (KCC), JAMSTEC. These data were removed from this web site.

In June, 2013, values of a parameter `Core initial recovery (%)' were corrected for the following 156 cores from the 103 holes. Each of the values had been 0.01 % lower than each of the correct values due to a bug of J-CORES Version 1.8.17 and before to mis-round computed recoveries. The bug was fixed by J-CORES Version 1.8.18.

In March, 2013, superconducting rock magnetometer data were corrected for the following ten core section halves from Hole C0001B. The intensity values (A/m) had been larger than the correct values due to wrong values of a parameter, `area' (incorrect, 17.09 cm2; correct, 17.10 cm2). The intensity values were corrected by multiplying them by (17.09/17.10).

In January, 2013, data of Expedition 338 were made available with a password protection (Holes C0002F, H, I, J, K, L, C0012H, C0018B, C0021A, B, C0022A and B).

In November, 2012, depth values for three downhole measurements (APCT3) at Holes 315-C0001F, 316-C0008C and 333-C0018A were corrected. The wrong and corrected DSF values are the followings.

See IODP Depth Scales Terminology in IODP Program Document to know what is DSF.

In October, 2012, data of Expedition 337 were made available with a password protection (Hole C0020A).

Before July 17, 2012, CSF-B values in J-CORES' Bulk Exported file sets were wrong due to a bug of J-CORES Version 1.8.9 and before. These values were corrected by J-CORES Version 1.8.10. Differences of wrong values from correct values were from -0.006 to 0.005 m.

See IODP Depth Scales Terminology in IODP Program Document to know what is CSF-B.

In June, 2012, thermal conductivity data for some horizons in Expedition 316 cores were corrected (C0004C, D, C0006E and C0008C).

Some sorts of uncorrectable errors in measurements by Cryogenic magnetometer were described for some sections (315-C0001E, F, H and 316-C0007C).

In June, 2012, data of Expedition 343 were made available with a password protection (Holes 343-C0019A, B, C, D and E).

Some parameters were added by the expedition and some other parameters were renamed as listed by a table.

On May 18, 2012, the moratorium of Expedition 333 expired and the data for Holes C0011C, D, C0012C, D, E, F, G and C0018A were unlocked.

By the beginning of February, 2012, the data acquired by JAMSTEC cruises of D/V Chikyu (Expeditions 901 through 905) were removed from this site. The data were being distributed by another site JAMSTEC Data Site for Research Cruises hereafter.

On December 16, 2011, Expedition 905 data were unlocked after the moratorium expiration.

On December 11, 2011, the moratorium of Expedition 332 expired and the data for Hole C0002G were unlocked.

In December, 2011, this site had (1) a vocabulary for visual core description (VCD) and (2) a data file of curatorial records made by cumulating records for all the holes of all the expeditions (The file was removed later). See contents of this site for details.

On November 18, 2011, Expedition 904 data were unlocked after the their moratorium expiration.

On October 4, 2011, the moratorium of Expedition 331 expired and the data for Holes C0013A, B, C, D, E, F, G, H, C0014A, B, C, D, E, F, G, C0015A, B, C, C0016A, B, C0017A, B, C and D were unlocked.

To follow an update of Digital Object Identifier (DOI) online display guidelines of CrossRef on August 2, 2011, changed how to display DOIs for Proceedings of the Integrated Ocean Drilling Program in this web site. Previously they had been shown like doi:10.2204/iodp.proc.322.2010 and were changed like http://dx.doi.org/10.2204/iodp.proc.322.2010.

By July 25, 2011, spinner magnetometer intensity data by Expedition 322 for Holes C0011B and C0012A were corrected. All intensity data from those holes in unit A/m were multiplied by 103 to correct mishandling of the unit.

On May 12, 2011, Expedition 903 data of cores at NT2-11 (a.k.a. Site 319-C0009) GeoTech, Kumano and Suruga Bay were unlocked (903-C9003A, B and C; C9004A, C9005A, B, C, D and E; C9006A, C9007A, C9008A and C9009A, respectively) after the their moratorium expiration.

By April 14, 2011, the following eight sorts of data corrections were performed. (1) At Horizon 322-C0011B-3R-1, 53.5 cm, two sets of anisotropies of P-wave velocity measurements had been mixed and they were split correctly. (2) Some measured horizons were corrected their depth values for Cryogenic magnetometer measurements for Sections 315-C0001E-5H-6, 7 and C0001F-7H-11. (3) Some duplicated data of Cryogenic magnetometer measurements were deleted from Sections 315-C0001F-2H-1. (4) Cryogenic magnetometer measurements for Sections 315-C0002B-8R-3 and 11R-5 had been of wrong Sections 8R-1 and 11R-4, respectively, and they were moved. (5) Some junk data of Cryogenic magnetometer measurements were deleted from Samples 316-C0006E-41X-6, 50–53 cm and C0008A-1H-4, 89–91 cm. (6) Some junk data of Spinner magnetometer measurements were deleted from Sample 322-C0012A-54R-1, 77–79 cm. (7) Some of XRF data for cuttings samples of Hole 319-C0009A had been of wrong cuttings series and they were moved. (8) Well loggings data at negative depths (i.e. above sea floor) were removed from Holes 314-C0001D, C0002A, C0004B, C0006B, 319-C0009A and 322-C0011A. In addition, the third party measurements of electrical conductivity and anisotropy of P-wave velocity for Holes 315-C0001H, C0002B, 316-C0004D, C0006E, C0006F, C0007D and C0008A were added. A series of minor changes also happened: The time stamps of bulk CN measurements were corrected.

A parameter was added to the list of extra numerical data (Extra Scalar) in order to add the third party measurements of electrical conductivity.

From March 13 to 23, 2011, this site has been shutdown in order to prepare for electrical power blackout due to the 2011 off the Pacific coast of Tohoku Earthquake.

On February 22, 2011, the coordinates of Hole 326-C0002F were made available.

On February 10, 2011, data of Expedition 333 were made available with a password protection (Holes 333-C0011C, C0011D, C0011E, C0012C, C0012D, C0012E, C0012F, C0012G and C0018A).

Nine parameters were added to the list of extra numerical data (Extra Scalar) in order to handle Expedition 333 data.

On January 7, 2011, data of Expedition 332 were made available with a password protection, including LWD/MWD data (Hole 332-C0002G).

226 parameters were added to the list of extra numerical data (Extra Scalar) in order to handle Expedition 332 data including the parameters of newly employed LWD tool arcVISION.

By November 9, 2010, some data corrections were done for some holes as the followings. At the same time some uncorrectable errors were marked as planned before.

In addition, similar corrections and uncorrectable data marking were done also for some holes of non-IODP expeditions as the followings.

On October 25, 2010, data of Expedition 331 were made available with a password protection (Holes 331-C0013A, C0013B, C0013C, C0013D, C0013E, C0013F, C0013G, C0013H, C0014A, C0014B, C0014C, C0014D, C0014E, C0014F, C0014G, C0015A, C0015B, C0015C, C0016A, C0016B, C0017A, C0017B, C0017C and C0017D).

On October 29, 2010, downhole measurement APCT3 data were made available for the expedition.

On November 5, 2010, 15 parameters were added to the list of extra numerical data (Extra Scalar) in order to handle Expedition 331 data including some firstly conducted measurements and some third party measurements.

On October 10, 2010, the moratorium of Expedition 322 expired and the data for Holes C0011A, B, C0012A and B were unlocked. Hole C0012A was however incomplete: It excluded one out of two NRM spinner magnetometer measurements for three samples. By October 13, the issue was solved.

As informed before, some ZIP files of X-ray CT scanned images for some sections contained old wrong coronal image files. These ZIP files were fixed on September 8, 2010.

The moratorium of Expedition 319 expired on August 31, 2010: The data were unlocked (Holes C0009A and C0010A).

This web site has shown the following sentences at its top page.

In the summer 2010, this site will be improved how to distribute the data in order to co-work with the coming SEDIS Phase III (Planning note by CDEX [April, 2010] and DMCG meeting slide [July, 2010] for details). See RFP of IODP-MI for details of SEDIS Phase III.

On August 31, 2010, CDEX completed implementing the plan: (1) Persistent snapshot of J-CORES' Bulk Exported data file set was taken for each hole of Expeditions 314, 315, 316 and 319 (314-C0001A, B, C, D, C0002A, C0003A, C0004B, C0006B, 315-C0001E, F, G, H, I, C0002B, C, D, 316-C0004C, D, C0006C, D, E, F, C0007A, B, C, D, C0008A, B, C, 319-C0009A and C0010A; The snapshots were removed later). (2) The list of extra numerical data (Extra Scalar) were shown with explanation for each parameter (The list was removed later). (3) Numerical data of final forms of well logging and downhole measurements were loaded onto J-CORES and are being included by Bulk Exported files.

As announced previously, some data errors had been found but could not be corrected. As a part of them, such data of moisture and density (MAD) measurements for Expeditions 902, 315, 316 and 322 were marked on August 31, 2010. Bulk Exported CSV files contain the descriptions of the measurement errors in MAD comment column.

In addition to the data corrections by August 13, 2010, another series of data correction was done for the moisture and density (MAD) measurements for Expeditions 315, 316, 319 and 322 on August 17, 2010. The corrected data were made available on August 19, 2010.

As CDEX announced, some sorts of data were corrected for Expeditions 901, 902, 314, 315, 316, 903, 319, 322, 904 and 905 and became available on August 13, 2010. Some zip files of X-ray CT scanned images for some sections still contain old wrong coronal image files; J-CORES Bulk Exported data files contain new corrected coronal images. Some data cannot be corrected; they will be marked by some ways soon.

At the beginning of August, 2010, CDEX announced the followings.

Dear IODP Scientists,

In a review of MSCL-W data in preparation for this year’s IODP expeditions, we have found that there were several errors discovered in some of the data collections with some of the following instruments over previous expeditions: XCT images, MAD measurements, MSCL-W, SQUID, IC-Anion, and UV-NH4. These Expeditions include parts of IODP Exp 315, 316, 319, and 322. Detailed information particular to each expedition is being sent to the respective science parties of the relevant expeditions.

We have completed a comprehensive review of all the data sets collected aboard D/V Chikyu, and have certified that there have been no other errors. We sincerely apologize for the trouble and inconvenience this causes for scientists using our data, and realize that these kinds of errors, while unfortunate, should have been caught before. In order to prevent the reoccurrence of these kinds of mistakes, the Center for Deep Earth Exploration (CDEX), along with Marine Works Japan (MWJ), are reviewing and reforming the calibration and data collection procedures for each instrument aboard D/V Chikyu and revisiting operator training for ALL MWJ technicians aboard D/V Chikyu.

Corrected data (with the correct calibration figures) will be updated and uploaded to the JCORES public website (http://sio7.jamstec.go.jp/) by Friday, 13 August 2010. We again apologize for the trouble this will cause all scientists using our data, and realize that it is our duty to provide the most accurate and reliable data to the science community.

Data of Expeditions 314, 315 and 316 cannot be accessed while the data correction.

Similar errors were found also for Expeditions 901, 902, 903, 904 and 905.

On June 21, 2010, data index pages were reorganized. This web site was renamed from `Chikyu Laboratory Data Center' to `SIO7 Data Center'.

In Week of May 31, 2010, around 150 parameters were renamed in the Extra scalar column group in the J-CORES Bulk Exported data files. At the same time, the columns were re-categorized into bulk-something.csv files.

After May 12, 2010, the J-CORES Bulk Exported data files are by using J-CORES Version 1.6, which implements IODP Depth Scale Terminologies (Version 1.1).

On April 1, 2010, a planning note was opened how this site will be improved its data distribution in order to co-work with the coming SEDIS Phase III.

In March and April, 2010, a few minor updates were applied to the distributing data files originated from the J-CORES database.

After March 19, 2010, J-CORES Bulk Exported data file set does not include bulk.csv or complete.zip. At the same time, the metadata were improved to have more information for SEDIS Phase I. After April 12, 2010, double colon characters :: delimit the title and series names in the column headers of the Extra scalar column group in the J-CORES Bulk Exported data files. The delimiter was a hyphen-minus character - before. After April 16, 2010, some bulk-something.csv files contain their targeting discrete sample information. Files bulk-something.csv are generated by picking some kinds of data from bulk.csv which is Bulk Exported from the J-CORES database. These files contained measurement results with their depths only before.

In March, 2010, this site started distributing the scientific reports of JAMSTEC (i.e. non-IODP) expeditions by D/V Chikyu.

Subject: Unit of MSCL-W Magnetic susceptibility

Description: In October, 2009 during Expedition 322 it was reported by one of the onboard scientists that the unit of MSCL-W Magnetic susceptibility given by J-CORES was suspicious. After the investigation we found that the unit (×0.001 SI) being used was incorrect and the wrong unit had been posted for the bulk export files. We also confirmed that the problem was only the unit but it had no effect on MSCL-W Magnetic susceptibility measurement.

Status: The problem was fixed by changing the unit to the write one (×0.00001 SI). The correction was applied all the bulk export files shown in Public J-CORES Data center on November 6, 2009 Japan Standard Time.

Center of Deep Earth Exploration, Japan Agency for Marine-Earth Science and Technology