Development of the very long-range cosmic-ray muon radiographic imaging technique to explore the internal structure of an erupting volcano, Shinmoe-dake, Japan
Geosci. Instrum. Method. Data Syst., 4, 215-226, doi:10.5194/gi-4-215-2015, 2015
A comprehensive data acquisition and management system for an ecosystem-scale peatland warming and elevated CO2 experiment
Summary: Ecosystem-scale manipulation experiments are getting more complicated and require innovative approaches that help manage high volumes of in situ observations. New large-scale, well-designed, and reliable data acquisition and management systems will become common it the future. The presented approach shows an example of such a system that was built in a remote and harsh environmental location. The provided details can be used for the design of similar systems for other experiments in future.
Geosci. Instrum. Method. Data Syst., 4, 203-213, doi:10.5194/gi-4-203-2015, 2015
Thermal-plume fibre optic tracking (T-POT) test for flow velocity measurement in groundwater boreholes
Summary: The monitoring and measurement of water flow in groundwater wells allows us to understand how aquifers transmit water. In this paper we develop a simple method, which we call T-POT, that allows flows to be estimated by tracking the movement of a small parcel of warmed water. The parcel is tracked using fibre optic temperature sensing - a technology that allows detailed measurements of temperature, and therefore flow using the T-POT method, to be made in the well.
Geosci. Instrum. Method. Data Syst., 4, 197-202, doi:10.5194/gi-4-197-2015, 2015
Global trend analysis of the MODIS drought severity index
Summary: The remotely sensed drought severity index (DSI) records compiled by Mu et al. (2013) exhibit significant local trends in several geographic areas. Since the interpretation of DSI values and trends depend on several local factors, standard field significance tests cannot provide more reliable results than the presented local trend survey. The observed continent-wide trends might be related to a slow (decadal) mode of climate variability, a link to global climate change cannot be established.
Geosci. Instrum. Method. Data Syst., 4, 189-196, doi:10.5194/gi-4-189-2015, 2015