Distribution of oxygen and hydrogen isotopes in shallow groundwaters from Southern India: influence of a dual monsoon system

Deshpande, R.D.; Bhattacharya, S. K.; Jani, R. A.; Gupta, S. K.

doi:10.1016/s0022-1694(02)00354-2

Cited by 122 publications

(68 citation statements)

References 14 publications

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“…In last two decades, stable isotope variations in precipitation, groundwater and atmospheric water vapour have been used to identify water vapour source for the rainfall at different locations (Krishnamurthy and Bhattacharya, 1991;Bhattacharya et al, 2003;Deshpande et al, 2003;Gupta et al, 2005;Sengupta and Sarkar, 2006;Breitenbach et al, 2010;Deshpande et al, 2010;Warrier et al, 2010). In these studies, it has not been possible to unambiguously ascribe the observed precipitation isotope variation to a particular causality (namely, vapour source, amount of rainfall, temperature, elevation, relative humidity variation, sub-cloud evaporation, continental recycling rainout history).…”

Section: Discussionmentioning

confidence: 99%

“…Embedded in this broad meteorological scheme is the prominent wind direction from the SW to the northeast, all along the western coast of India ( Figure 1). This wind system is also known as the Arabian Sea branch of the SW monsoon because the winds blow from over the AS (Rao, 1976;Ghosh et al, 1978;Mooley and Shukla, 1987;Rajan, 1988;Deshpande et al, 2003;Gupta et al, 2005). However, the BOB, to the east of India, also supplies considerable moisture to the Indian landmass during the SW monsoon when winds from the AS branch cross over to the BOB and 756 R.D.…”

Section: Study Areamentioning

confidence: 99%

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Water vapour source identification for daily rain events at Ahmedabad in semi‐arid western India: wind trajectory analyses

Deshpande

Dave

Padhya

et al. 2015

Meteorological Applications

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ABSTRACT:The Arabian Sea (AS), the Bay of Bengal (BOB) and continental recycling are three principal vapour sources identified for the rain events at Ahmedabad located in semi-arid western India. In the present study, the 48 h backward wind trajectories, at 6 h intervals, converging at an altitude of 1.5 km above the ground, for 120 daily rain events during the monsoon seasons of 2005-2008, have been examined using HYsplit Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model. Temperature, relative humidity, altitude and rainfall along each trajectory were studied at hourly intervals. The temperature and relative humidity data were used to compute the absolute humidity (g m −3 ) of the air parcel at its location at hourly intervals. The relationship between the height of the air parcel, its relative humidity and rainfall along each trajectory was used to identify the vapour pick-up region. The region around the maximum value of absolute humidity for each trajectory was designated as the dominant vapour pick-up region for each rain event at Ahmedabad. In this manner, principal vapour source identification was unambiguously possible for 93.3% of all the 120 rain events. The fraction of total events and the fractions of total rainfall attributable to the three principal vapour sources, respectively, are: AS, 68.3 and 62.1%; BOB, 2.5 and 1.5%; recycled, 22.5 and 24.5%; mixed, 6.7 and 11.8%. Most of the rain events with recycled vapour contribution occur during the latter part of the monsoon season, namely during September.

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Section: Discussionmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Water vapour source identification for daily rain events at Ahmedabad in semi‐arid western India: wind trajectory analyses

Deshpande

Dave

Padhya

et al. 2015

Meteorological Applications

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“…[12] Although these uncertainties remain, we used surface water to represent the isotopic value of rainwater for several reasons: (1) it is easier to collect surface water samples at many points in a mountainous area at the same time than it is to collect many rainwater samples at the same time, (2) temporal variations in the stable isotope composition of surface water are small compared with those of rainwater [Genereux and Hooper, 1998;Asano et al, 2002], and (3) stream water in the upper reaches of a stream is assumed to be representative of rainwater falling in a specific narrow upstream catchment near mountaintops [Deshpande et al, 2003]. Thus, as the first step toward characterizing the isotopic nature of water in the mesoscale peninsula, we collected surface water samples.…”

Section: O and Dmentioning

confidence: 99%

Effect of enriched early dropped rainwater on mesoscale isotopic distribution in surface water on the Kii Peninsula, Japan

Ishizuka

Sone

Hiroyuki

et al. 2006

Water Resources Research

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[1] Mesoscale spatial distributions and temporal variations of oxygen and hydrogen isotope compositions in surface waters were observed on the Kii Peninsula, Japan, which receives more than 3000 mm of precipitation annually. The enriched isotopic values were distributed along the western, southern, and eastern coasts. To explain this, we proposed a new parameter, early dropped rainwater frequency (ERF), and defined it as the number of times that early dropped rainwater was first observed in a domain. ERF can be considered a characteristic of rainfall, and it is a useful parameter for clarifying mesoscale isotopic distribution. A mass balance simulation suggested the early dropped rainwater determined the specific isotopic value of stream water in a watershed.Citation: Ishizuka, M., Y. Sone, H. Ii, and T. Hirata (2006), Effect of enriched early dropped rainwater on mesoscale isotopic distribution in surface water on the Kii Peninsula, Japan, Water Resour. Res., 42, W12410,

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“…Very little information on the mid-Cretaceous events is available from Mexico (Scholle and Arthur, 1980;Bralower et al, 1999). The isotopic study on mid-Cretaceous shallow marine carbonates have shown evidence for global-scale tectonics (Gröcke et al, 2005;Maheshwari et al, 2005;Amodio et al, 2008), paleooceanographic processes (Kumar et al, 2002;Madhavaraju et al, 2004;Armstrong et al, 2009Armstrong et al, , 2011, climatic and biotic changes (Deshpande et al, 2003;Das Gupta et al, 2007;Mishra et al, 2010;Préat et al, 2010;Tewari et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Diagenetic significance of carbon, oxygen and strontium isotopic compositions in the Aptian-Albian Mural Formation in Cerro Pimas area, northern Sonora, Mexico.

Madhavaraju

Lee

González–León

2013

Journal of Iberian Geology

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Distribution of oxygen and hydrogen isotopes in shallow groundwaters from Southern India: influence of a dual monsoon system

Cited by 122 publications

References 14 publications

Water vapour source identification for daily rain events at Ahmedabad in semi‐arid western India: wind trajectory analyses

Water vapour source identification for daily rain events at Ahmedabad in semi‐arid western India: wind trajectory analyses

Effect of enriched early dropped rainwater on mesoscale isotopic distribution in surface water on the Kii Peninsula, Japan

Diagenetic significance of carbon, oxygen and strontium isotopic compositions in the Aptian-Albian Mural Formation in Cerro Pimas area, northern Sonora, Mexico.

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