scholarly journals Short-Term Variation and Discharge Mechanism of the Futamata Hot Spring Estimated by Continuous Monitoring Data

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 977
Author(s):  
Yota Suzuki ◽  
Hiroshi Asanuma

Japan has abundant hot spring resources, which, if used appropriately, could contribute to CO2 emission reduction and socioeconomic development. Thus, for the appropriate use of hot spring resources, it is necessary to estimate the detailed discharge mechanism and its surrounding hydraulic characteristics. In our study, a hot spring monitoring device was developed and installed in the Futamata hot spring to evaluate its discharge mechanism. Comparison between the measured values of the monitoring device and the amount of precipitation indicated that this hot spring shows two types of water quality change trends depending on the intensity of precipitation. However, this was a short-term variation that could not be detected by conventional methods. To address this limitation, we created a new discharge mechanism model for the Futamata hot spring based on these observations, which allowed for the continuous observation of hot spring water using a monitoring device and was effective in detecting short-term variations. As such observations contribute to estimating the hydraulic structure around the hot spring, they are important for appropriate use of hot spring resources.

2002 ◽  
Vol 34 (5) ◽  
pp. 577-584 ◽  
Author(s):  
Marja Maljanen ◽  
Pertti J. Martikainen ◽  
Heikki Aaltonen ◽  
Jouko Silvola

2015 ◽  
Vol 81 (11) ◽  
pp. 3834-3847 ◽  
Author(s):  
Matthew R. Urschel ◽  
Michael D. Kubo ◽  
Tori M. Hoehler ◽  
John W. Peters ◽  
Eric S. Boyd

ABSTRACTRates of dissolved inorganic carbon (DIC), formate, and acetate mineralization and/or assimilation were determined in 13 high-temperature (>73°C) hot springs in Yellowstone National Park (YNP), Wyoming, in order to evaluate the relative importance of these substrates in supporting microbial metabolism. While 9 of the hot spring communities exhibited rates of DIC assimilation that were greater than those of formate and acetate assimilation, 2 exhibited rates of formate and/or acetate assimilation that exceeded those of DIC assimilation. Overall rates of DIC, formate, and acetate mineralization and assimilation were positively correlated with spring pH but showed little correlation with temperature. Communities sampled from hot springs with similar geochemistries generally exhibited similar rates of substrate transformation, as well as similar community compositions, as revealed by 16S rRNA gene-tagged sequencing. Amendment of microcosms with small (micromolar) amounts of formate suppressed DIC assimilation in short-term (<45-min) incubations, despite the presence of native DIC concentrations that exceeded those of added formate by 2 to 3 orders of magnitude. The concentration of added formate required to suppress DIC assimilation was similar to the affinity constant (Km) for formate transformation, as determined by community kinetic assays. These results suggest that dominant chemoautotrophs in high-temperature communities are facultatively autotrophic or mixotrophic, are adapted to fluctuating nutrient availabilities, and are capable of taking advantage of energy-rich organic substrates when they become available.


CATENA ◽  
2022 ◽  
Vol 210 ◽  
pp. 105949
Author(s):  
R.M. Gonçalves ◽  
T.F. Holanda ◽  
H.A.A. Queiroz ◽  
P.H.G.O. Sousa ◽  
P.S. Pereira

Author(s):  
Susana Villaluenga de Gracia

<p>Este trabajo pretende aportar evidencia empírica sobre la existencia de un importante aparato de supervisión y control físico y contable en la Iglesia, cuyo objeto era garantizar la conservación del patrimonio eclesiástico y la correcta gestión de sus rentas, evitando dispendios, asegurando su empleo y exigiendo responsabilidades al respecto. Esta exigencia surge, a su vez, de lo acordado en los concilios, cuyos cánones, una vez publicados, tomaban forma en los sínodos diocesanos para acomodarlos a necesidades concretas, integrándose después en la normativa interna de las corporaciones religiosas.Habida cuenta de esta última documentación referida a la Iglesia de Toledo, estudiaremos la figura de los visitadores y contadores, nombrados para supervisar y controlar el correcto funcionamiento de la institución, salvando así la responsabilidad del Cabildo en la administración temporal y espiritual de los bienes eclesiásticos. Al mismo tiempo, haremos hincapié en los instrumentos de control: el inventario y el método de cargo y data o descargo. Finalmente, nos centraremos en la actuación de los contadores, encargados de tomar la cuenta a los responsables de los diferentes centros donde se manejaba particularmente el dinero en efectivo de cada lote de rentas vinculado a un fin concreto.</p><p>This paper provides empirical evidence on the existence of an important monitoring device and physical control and accounting in the Church, aimed at ensuring the conservation of ecclesiastical heritage and the proper management of their revenues, avoiding extravagance, ensuring an appropriate use of these revenues, and demanding responsibilities to those held accountable in that regard. This requirement arises, in turn, from measures agreed by the Councils, whose canons, once published, were collected in diocesan synods and in the internal normative to meet the specific needs of the different religious organisations.Given this latest documentation relating to the Church of Toledo, we will study the figure of the visitors and auditors, appointed to monitor and control the correct functioning of the institution. This ensured the responsibility of the Chapter in the administration of church property. At the same time, we will look closely into the instruments of control used: the inventory and the charge and discharge method. Finally, we will focus on the performance of auditors, who were responsible for taking account to those responsible for the different centers that handled the cash income of each lot of revenues tied to a particular purpose.</p>


2015 ◽  
Vol 105 (5) ◽  
pp. 232-236 ◽  
Author(s):  
Raymond Guiteras ◽  
Amir Jina ◽  
A. Mushfiq Mobarak

A burgeoning “Climate-Economy” literature has uncovered many effects of changes in temperature and precipitation on economic activity, but has made considerably less progress in modeling the effects of other associated phenomena, like natural disasters. We develop new, objective data on floods, focusing on Bangladesh. We show that rainfall and self-reported exposure are weak proxies for true flood exposure. These data allow us to study adaptation, giving accurate measures of both long-term averages and short term variation in exposure. This is important in studying climate change impacts, as people will not only experience new exposures, but also experience them differently.


Sign in / Sign up

Export Citation Format

Share Document