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Weiss, RF, Kirsten OH, Ackermann R, Ramo S.  1977.  Free vehicle instrumentation for the in-situ measurement of processes controlling the formation of deep-sea ferromanganese nodules. OCEANS '77 Conference Record. , New York, N.Y., United States (USA): Inst. Electric. and Electron. Eng., New York, N.Y.   10.1109/OCEANS.1977.1154352   Abstract

This paper describes the free vehicle instrumentation under development for the Manganese Nodule Program (MANOP) of the International Decade for Ocean Exploration (IDOE). Principal emphasis is being placed on the MANOP Bottom Lander, a device designed to carry out in situ chemical flux experiments at the seawater-sediment interface at depths up to 6 km. This device will collect time-series water samples from three separate bottom chamber experiments, each of which can be spiked with various chemical and radioisotopic tracers. The device will also make oxygen and pH measurements in each chamber and will take box core samples under each chamber before returning to the surface. All operations will be microprocessor-controlled with data storage capability and with an acoustic data-link to the surface. Deployments will be for periods of up to 1 year.

Takahashi, T, Weiss RF, Culberson CH, Edmond JM, Hammond DE, Wong CS, Li Y-hui, Bainbridge AE.  1970.  A carbonate chemistry profile at the 1969 GEOSECS intercalibration station in the eastern Pacific Ocean. Journal of Geophysical Research. 75:7648-7666., Washington, DC, United States (USA): American Geophysical Union, Washington, DC   10.1029/JC075i036p07648   AbstractWebsite

To compare and evaluate measurements made by the various laboratories participating in the Geochemical Ocean Section Study (Geosecs), four carbonate chemistry parameters, pH, pCO2, alkalinity, and total dissolved CO2, as well as temperature and salinity were measured for samples collected at the Geosecs intercalibration station, 28°20′±07′N and 121°41′±02′W. The methods for measurement include the glass-calomel electrode pair for pH, the pH and the potentiometric acid titration methods for alkalinity, gas chromatographic, infrared and potentiometric acid titration method for total CO2, and the gas equilibrator-infrared method for pCO2. The alkalinity values measured by the pH method agree with the values measured by the potentiometric acid titration method within 1%, and the total CO2 values measured by the chromatographic method agree with the values measured by the potentiometric acid titration method within 2%. The observed 3 to 5% difference between the total CO2 values measured by the chromatographic and infrared methods is attributed to the biological alteration of the unpoisoned samples used for the infrared methods. When two of the four measured carbonate parameters were used to calculate the remaining two parameters, the calculated values are found to differ systematically from the measured values for those two parameters. Such a discrepancy can be eliminated if a 30% error in the second apparent dissociation constant for carbonic acid (K2′) is assumed.

Craig, H, Weiss RF.  1970.  The GEOSECS 1969 Intercalibration Station: Introduction, hydrographic features, and total CO2-O2 relationships. Journal of Geophysical Research. 75:7641-7647., Washington, DC, United States (USA): American Geophysical Union, Washington, DC   10.1029/JC075i036p07641   AbstractWebsite

The temperature, salinity, dissolved oxygen, and shipboard chromatograph ΣCO2 data from the 1969 Geosecs station are summarized. Vertical diffusion-advection model parameters calculated from the ΣCO2 and O2 data, by using the mixing parameters obtained from temperature and salinity, give approximately equal mean CO2 production and O2 consumption rates over the deep-water column.