Joyeeta Bhattacharya

Joyeeta Bhattacharya
Picarro Inc. · Environmental Vertical

PhD
Application Scientist; Picarro Inc.

About

22
Publications
2,560
Reads
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127
Citations
Introduction
Joyeeta Bhattacharya is currently working as an Application Scientist with Picarro, that specializes in high precision analyzers for measurements of greenhouse and trace gases as well as their isotopologues.
Additional affiliations
January 2019 - present
Rice University
Position
  • Research Assistant
Description
  • Oceanography
August 2015 - present
Rice University
Position
  • Graduate Research Assitant
May 2012 - July 2012
Birbal Sahni Institute of Palaeobotany
Position
  • Fellow
Description
  • Phytoliths as indicator of paleoprecipitation
Education
August 2015 - December 2020
Rice University
Field of study
  • Geoscience
July 2012 - May 2014
Jadavpur University
Field of study
  • Geoscience
July 2009 - July 2012
Jadavpur University
Field of study
  • Geoscience

Publications

Publications (22)
Article
Full-text available
International Ocean Discovery Program (IODP) Expedition 371 drilled six sites in the Tasman Sea of the southwest Pacific between 27 July and 26 September 2017. The primary goal was to understand Tonga-Kermadec subduction initiation through recovery of Paleogene sediment records. Secondary goals involved understanding regional oceanography and clima...
Article
Full-text available
Data from International Ocean Discovery Program (IODP) Expedition 371 reveal vertical movements of 1–3 km in northern Zealandia during early Cenozoic subduction initiation in the western Pacific Ocean. Lord Howe Rise rose from deep (~1 km) water to sea level and subsided back, with peak uplift at 50 Ma in the north and between 41 and 32 Ma in the s...
Article
Full-text available
Carbon isotope (δ13C) records from marine sediments and sedimentary rocks have been extensively used in Cenozoic chemostratigraphy. The early Paleogene interval in particular has received exceptional attention because negative carbon isotope excursions (CIEs) documented in the sedimentary record, for example, at the Paleocene Eocene Thermal Maximum...
Article
Rapid onset of subduction tectonics across the western Pacific convergent margins in the early Eocene was followed by a slower phase of margin growth of the proto Tonga-Kermadec subduction system north of Zealandia during a middle Eocene phase to tectonic adjustment. We present new age constraints from International Ocean Discovery Program Expediti...
Conference Paper
Carbon isotope (δ13C) records from marine sediments have been extensively used in chemostratigraphic correlation across ocean basins and during different geologic time intervals. The early Paleogene interval in particular has received exceptional attention because negative carbon isotope excursions (CIEs) documented in the sedimentary record, e.g....
Preprint
Size-fraction specific isotopic variations as a framework for interpreting early Paleogene bulk sediment carbon isotope records
Conference Paper
A series of carbon isotope excursions (CIEs) mark variations in the global carbon cycle and significant changes in climate through early Paleogene. The Paleocene Eocene Thermal Maximum (PETM) ca. 56 Ma is the most pronounced and well documented of these events expressed as a clay rich layer in many deep-sea sections, resulting from widespread carbo...
Conference Paper
A series of short-term negative carbon isotope excursions (CIEs) characterize the early Paleogene, as perhaps best expressed in high-resolution bulk carbonate δ13C records. These CIEs (e.g., the PETM ca 56 Ma, ETM2 or H1 event ca ∼54 Ma, ETM3 or K/X event ca ∼53 Ma) clearly mark changes in global carbon cycling and probably climate change, as at le...
Conference Paper
The early Paleogene was the last phase of true greenhouse conditions on Earth with minimal to no ice on the poles. Superimposed on a long term warming trend from the late Paleocene through early Eocene, several geologically short intervals of extreme warmth and light carbon injection occurred. These "hyperthermals" manifest as negative carbon isoto...
Article
Full-text available
International Ocean Discovery Program (IODP) Expedition 371 drilled six sites in the Tasman Sea of the southwest Pacific between 27 July and 26 September 2017. The primary goal was to understand Tonga-Kermadec subduction initiation through recovery of Paleogene sediment records. Secondary goals involved understanding regional oceanography and clima...

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Projects

Projects (2)
Project
Towards a deeper level understanding of how pelagic carbonate accumulation responds to perturbations in carbon cycling and climate change in both long- and short-term time scales, with an emphasis on the dynamic climate regime of the Eocene epoch.
Project
Documenting carbon cycle perturbations in middle Eocene from a novel sedimentary record from northern Zealandia. This record comprises offshore drill sites in Tasman Sea, drilled during IODP Exp. 371 and onshore sedimentary sections and borehole cores from New Caledonia.