HDF5 is a foundational data format used across high-performance computing, artificial intelligence, machine learning, and long-term data storage. Its widespread adoption makes HDF5 not only a crucial infrastructure but also a target for security threats. This presentation introduces NSF-Safe-OSE, an initiative to enhance the safety, security,...

McNeill, L.C. Dugan, B. Petronotis, K.E.

X-ray diffraction (XRD) is used to identify minerals and their proportions in sediment or hard rock sample powders on a Bruker AXS D4 Endeavor X-ray diffractometer. Results are returned as diffractograms in a viewable format (either PDF or PNG). Updated 26 June 2020 to include additional raw data files in supplementary materials. 

McNeill, L.C. Dugan, B. Petronotis, K.E.

Interstitial water constitutents were measured by UV-VIS spectrometry using colorimetric methods (e.g., ammonium, nitrate, nitrite, phosphate, silica, and sulfide) by an Agilent CARY 100 UV-VIS spectrophotometer.

McNeill, L.C. Dugan, B. Petronotis, K.E.

Gamma ray attenuation (GRA) data were acquired using a Cs-137 collimated source and a sodium iodide (thallium), or NaI(Tl), scintillation detector. The signal was calibrated using water and aluminum standards to provide a proxy for bulk density. This measurement was performed by a sensor mounted on either the Whole-Round Multisensor Logger...

McNeill, L.C. Dugan, B. Petronotis, K.E.

Salinity was measured on interstitial water (IW) samples using an optical refractometer.

McNeill, L.C. Dugan, B. Petronotis, K.E.

Report includes detailed information about samples taken for testing: location/depth, type/form factor, test, request number, and database identifier.

McNeill, L.C. Dugan, B. Petronotis, K.E.

This composite report includes data from two analyses (total carbon from \Elemental analysis [CHNS]\ and inorganic carbon from \[Coulometer]\). Each row combines the CHNS and Coulometer data from measurements made on the same sample at the same time for a particular section and section offset (depth). If data do not exist for a particular...

McNeill, L.C. Dugan, B. Petronotis, K.E.

This composite report returns data from two different gas chromatograph configurations (GC3 and NGA). Each row combines data from several measurements made on the same sample at the same time for a particular headspace or vacutainer sample. If data do not exist for a particular expedition, the column does not appear. Gas samples were measured...

McNeill, L.C. Dugan, B. Petronotis, K.E.

Magnetic remanence was measured on section halves (and rarely on whole-round sections) using a 2G Enterprises 760R cryogenic magnetometer, first as natural remanent magnetization (NRM) and then after demagnetization steps were performed on the samples by alternating field (AF) demagnetizer coils mounted in-line within the instrument.

McNeill, L.C. Dugan, B. Petronotis, K.E.

Dataset includes length data for every whole-round piece: bin length, whole-round piece length (measured by curation staff), and both the archive- and working-half piece lengths (optionally measured by scientists).