One meter resolution titanium CTD data from SONNE cruise SO298
type: Dataset
conforms to: http://mlcommons.org/croissant/1.0
creator: Zvi Steiner
creator: Rena Czeschel
creator: Gerd Krahmann
  type: Person
  family name: Krahmann
  given name: Gerd
  affiliation: GEOMAR - Helmholtz Centre for Ocean Research Kiel
creator: Eric Pieter Achterberg
publisher: PANGAEA
  type: Organization
  disambiguating description: Data Publisher for Earth & Environmental Science
included in data catalog: PANGAEA
  type: DataCatalog
  disambiguating description: Data Publisher for Earth & Environmental Science
date published: 2026-07-22
is part of: https://doi.pangaea.de/10.1594/PANGAEA.995906
additional type: dataset
description: A SeaBird SBE911Plus CTD mounted on a titanium rosette was deployed at 39 stations during RV Sonne cruise SO298 along the equatorial Pacific from Guayaquil, Ecuador to Townsville, Australia (GEOTRACES GP11 transect) during April – May 2023. The titanium CTD was used for trace metal clean collection of water samples, and was connected to the following sensors: Pressure (Digiquartz with TC), two temperature sensors (ITS90 °C), two conductivity sensors, two oxygen sensors (SBE43), transmissometer (Wet Labs C-Star), turbidity (OBS Seapoint) and an altimeter. The oxygen data were calibrated against discrete water samples analysed using the Winkler method, other sensor data used factory calibrations. Sensor data are averaged to one meter resolution.
abstract: A SeaBird SBE911Plus CTD mounted on a titanium rosette was deployed at 39 stations during RV Sonne cruise SO298 along the equatorial Pacific from Guayaquil, Ecuador to Townsville, Australia (GEOTRACES GP11 transect) during April – May 2023. The titanium CTD was used for trace metal clean collection of water samples, and was connected to the following sensors: Pressure (Digiquartz with TC), two temperature sensors (ITS90 °C), two conductivity sensors, two oxygen sensors (SBE43), transmissometer (Wet Labs C-Star), turbidity (OBS Seapoint) and an altimeter. The oxygen data were calibrated against discrete water samples analysed using the Winkler method, other sensor data used factory calibrations. Sensor data are averaged to one meter resolution.
spatial coverage: Place
  geo: GeoShape
    box: -2.5 157.8536 0.00388 -81.0
    elevation: -5424.24m/-105.2m
temporal coverage: 2023-04-15T12:54:00/2023-05-26T16:08:00
size: QuantitativeValue
  value: 908026.0
  unit text: data points
variable measured: Event label
variable measured: Cast number
variable measured: DATE/TIME
  type: PropertyValue
  subject of: DefinedTermSet
    has defined term: Time
variable measured: LONGITUDE
variable measured: LATITUDE
variable measured: Pressure, water
  type: PropertyValue
  unit text: dbar
  subject of: DefinedTermSet
    has defined term: Pressure
    has defined term: water
    has defined term: Energy Density
    has defined term: Force Per Area
variable measured: Temperature, water
  type: PropertyValue
  unit text: °C
  subject of: DefinedTermSet
    has defined term: Temperature
    has defined term: water
variable measured: Salinity
  type: PropertyValue
  subject of: DefinedTermSet
    has defined term: salinity
variable measured: Oxygen
  type: PropertyValue
  unit text: µmol/kg
  subject of: DefinedTermSet
    has defined term: oxygen
    has defined term: Molar Concentration
variable measured: Turbidity (Nephelometric turbidity unit)
  type: PropertyValue
  unit text: NTU
  subject of: DefinedTermSet
    has defined term: Turbidity
variable measured: Attenuation, optical beam transmission
  type: PropertyValue
  unit text: %
  subject of: DefinedTermSet
    has defined term: attenuation
    has defined term: Dimensionless Ratio
keywords: CTD data; Equatorial pacific ocean; Pacific Ocean
license: https://creativecommons.org/licenses/by/4.0/
conditions of access: unrestricted
is accessible for free: true
language: en
distribution: data matrix.tab
distribution: FileObject
  type: DataDownload
  encoding format: text/html

Zvi Steiner
type: Person
family name: Steiner
given name: Zvi
affiliation: GEOMAR - Helmholtz Centre for Ocean Research Kiel

GEOMAR - Helmholtz Centre for Ocean Research Kiel
type: Organization
alternate name: GEOMAR

Rena Czeschel
type: Person
family name: Czeschel
given name: Rena
affiliation: GEOMAR - Helmholtz Centre for Ocean Research Kiel

Eric Pieter Achterberg
type: Person
family name: Achterberg
given name: Eric Pieter
affiliation: GEOMAR - Helmholtz Centre for Ocean Research Kiel

Time
type: DefinedTerm
alternate name: T

Pressure
type: DefinedTerm

water
type: DefinedTerm

Energy Density
type: DefinedTerm

Force Per Area
type: DefinedTerm

Temperature
type: DefinedTerm
alternate name: Θ

salinity
type: DefinedTerm

oxygen
type: DefinedTerm
alternate name: O

Turbidity
type: DefinedTerm

Dimensionless Ratio
type: DefinedTerm
alternate name: ψ

data matrix.tab
type: FileObject
type: DataDownload
encoding format: text/tab-separated-values