Intan Suci Nurhati, Ph.D. 
   HomeCV │ Paleoclimate & environment research                                                     │Past Expeditions                Lab
   └  Indonesian Corals & Trees  -  SE Asia  -  Tropical Pacific  -  Kuwait    
  └ Line Islands  -  Kelimutu    


My main research interest is to understand tropical climate change over the recent centuries using  nature's own archives such as corals and trees. Specifically, my researches aim to understand changes in regional rainfall variability. The majority of my past and ongoing researches revolve around corals, from various perspectives and to tackle different scientific and societal questions. I am also exploring the utility of tree isotopes as a potential land-based proxy of past rainfall variability in the tropics.

Education & Academic Merit

Ph.D. (2010). Georgia Inst. of Technology: Earth & Atmospheric Sciences, Certificate in Environmental Public Policy

   Graduate Research Assistantship (2005-2010)
John Bradshaw Award (2010)
   Anne Clough Endowment Fund (2009)
   PAGES ENSO Summer School Scholarship (2008)

B.A. (2005). Wesleyan University: Double-majored in Earth & Environmental Science (with Honors) and Economics

   Freeman Asian Scholarship (2001-2005)
   Davenport Research Grant (2004)
   Stearn Geology Field Camp Scholarship (2004)
   Mellon Summer Research Fellowships (2002, 2003)




Professional Experience

Senior Postdoctoral Associate, Singapore-MIT Alliance for Research and Technology (2014)

Green Talent Visiting Researcher, GEOMAR Helmholtz Centre for Ocean Research Kiel (Fall 2014)

Lecturer & Researcher (equivalent to Asst. Prof), Surya University (2013 - 2014)

Postdoctoral Associate, Singapore-MIT Alliance for Research and Technology (2010 - 2013)

Visiting Scholar, Massachusetts Institute of Technology (Fall 2012)

Visiting Researcher, University of Maryland (Summer 2012)

Graduate Student Researcher, Georgia Institute of Technology (2005-2010)



Research Projects & Fieldworks


  • Coral records of past marine environments and climate variability in the SE Asia, Indian Ocean and Kuwait

  • Indonesia's tree isotope records as a proxy for ENSO rainfall variations


  • Coral Drilling in Singapore, Thailand, Kuwait, Indonesia, and Hong Kong (the last one was for Dr. Natalie Goodkin's project) [2010-present]

  • Research cruise expedition to Halmahera onboard RV Baruna Jaya VII [2013]

  • "Central Tropical Pacific Sea-surface Temperature and Salinity Records of the 20th Century: Signatures of Natural and Anthropogenic Climate Change" [2005-2010]
    Ph.D. Dissertation. Advisor: Dr. Kim Cobb (Georgia Tech)

  • P. I. for National Geographic coral drilling cruise to Southern Line Islands, Kiribati [2008]

  • "Spatial and temporal analyses of the Indonesian Throughflow sediments" [2005-2010]
    Undergraduate Honors Thesis. Advisors: Drs. Suzanne O'Connell (Wesleyan University), and Delia Oppo (WHOI)

  • Led field sampling (with my dad :) !) to the three-colored Kelimutu Crater Lakes, Flores, Indonesia [2004]

  • "Impacts of sedimentation on corals in the Wakatobi National Park, Indonesia" [2004]
    Davenport Independent Summer Study. Advisors: Drs. David Smith & Steve  McMellor (Operation Wallacea, Uni. of Essex)

  • "Assessment of lipid content and tissue thickness as coral health bioindicators in nearshore Great Barrier Reef" [2004]
    Independent Study Project. Advisors: Drs. Tim Cooper & Katharina Fabricius (Australian Inst. of Marine Science)

  • "Biogenic silica in the Long Island Sound" [2004]
    Mellon Summer Research. Advisor: Dr. Johan Varekamp (Wesleyan University)


Grants & Awards

CENSAM Research Initiative (PI) "Constraining Nutrient Sources in Singapore Marine Environments via a Collaborative Multiproxy Approach in Coral Geochemistry" (2015)

The World Academy of Sciences (TWAS) Research Grant (2014)

IOC-WESTPAC Best Young Scientist Award (2014)

USAID-NSF PEER Science Grant (co-PI) "Tree Isotope Records of Past Rainfall Variability in the Indonesian Maritime Region" (2013)

Green Talents Award for International Forum of High Potentials in Sustainable Development from German Federal Ministry of Education and Research (2013)



Nurhati, I.S., S.Y. Cahyarini and E.A. Boyle (in prep.). Seawater density variations in western Indonesia: Implications to 20th Century Indonesian Throughflow.

Nurhati, I.S., J.M. Lee and E.A. Boyle (in prep.). Seawater barium variations in the eastern Malacca Straits via isotope dilution  mass spectrometry: Imprints of the regional hydrodynamics and climate.

Zhao, N., E.A. Boyle, I.S. Nurhati., G. Carrasco,  B. Gevao, A.N. Ghadban and L. Ali (submitted). Pb, Pb isotopes and Cd seawater history of the past 60 years from a coral core in the northern Arabian Gulf.

Chen, M-L., J.M. Lee, I.S. Nurhati, A. Switzer and E.A. Boyle (2015). Isotopic record of lead in Singapore Straits during the last 50 years: Spatial and temporal variations. Marine Chemistry, 168: 49-59, doi:10.1016/j.marchem.2014.10.007. PDF

Cahyarini, S.Y., M. Preiffer, I.S. Nurhati, E. Aldrian, W-C Dullo and S. Hetzinger (2014). SST and salinity variations at the Indonesian Throughflow exit passage over the 20th century via paired Timor coral d18O and Sr/Ca. Journal of Geophysical Research - Oceans, 119: 4593-4604, doi: 10.1002/2013JC009594. PDF

Lee, J.M., E.A. Boyle, I.S. Nurhati, M. Pfeiffer, A. Meltzner and B. Suwargadi (2014). Coral-based history of lead and lead isotopes of the surface Indian Ocean since the mid-20th century. Earth and Planetary Science Letters, 398: 37-47, doi: 10.1016/j.epsl.2014.04.030. PDF  

LaVigne, M., I.S. Nurhati, K.M. Cobb, H.V. McGregors, D. Sinclair, and R.M. Sherrell (2013). Systematic ENSO-driven nutrient variability recorded by central Pacific corals. Geophysical Research Letters, 40(1-6): 3956-3961, doi: 10.1002/grl.50765. PDF SuppInfo  Chosen as a research highlight on AGU's EOS.

Hathorne et al. (2013). Inter-laboratory study for coral Sr/Ca and other element/Ca ratio measurements. Geochemistry, Geophysics and Geosystems, 14(9): 3730-3750, doi: 10.1002/ggge.20230. PDF

Nurhati, I. S., K.M. Cobb, and E. Di Lorenzo. (2011). Decadal-scale SST and salinity variations in the central tropical Pacific: Signatures of natural and anthropogenic climate change. Journal of Climate, 24: 3294-3308, doi: 10.1175/2011JCLI3852.1. PDF  DATA

Sayani, H. R., K.M. Cobb, A.L. Cohen, W.C. Elliot, I.S. Nurhati,  K.A. Rose, and L.K. Zaunbrecher. (2011). Effects of diagenesis on paleoclimate reconstructions from modern and young fossil corals. Geochim. Cosmochim. Acta, 75(21): 6361-6373, doi: 10.1016/j.gca.2011.08.026. PDF

Nurhati, I. S., K.M. Cobb, C.D. Charles, and R.B. Dunbar. (2011). Correction to "Late 20th century warming and and freshening in the central tropical Pacific." Geophysical Research Letters, 38(24), L24707, doi:10.1029/2011GL049972. PDF

Nurhati, I. S. (2010). Coral records of central tropical Pacific sea-surface temperature and salinity variability over the 20th century. Ph.D. Dissertation. Georgia Institute of Technology. LINK

Nurhati, I. S., K.M. Cobb, C.D. Charles, and R.B. Dunbar. (2009). Late 20th century warming and and freshening in the central tropical Pacific. Geophysical Research Letters, 36(21), L21606, doi:10.1029/2009GL040270. PDF  DATA

Nurhati, I. S. (2005). Spatial and temporal analyses of the Indonesian Throughflow sediments: Possible indicators of climate-induced hydrologic changes. Undergraduate Honors Thesis. Wesleyan University.  LINK


Selected Talks and Presentations

"Chasing Rainfall Variations using Tropical Corals and Trees"

  Hokkaido University 2014

  Holocene Reconstruction Workshop 2014, National University of Singapore, Singapore

  CENSAM Public Lecture 2014


"Climate Researches at SMART's CENSAM"

  Co-presentation to Singapore's Ministry of Environmental and Water Resources' Climate Science Experts Network 2012

  Co-presentation to Singapore's National Climate Change Secretariat. 2012


"Indonesian Tree Isotope Records of ENSO-sensitive Rainfall Variations"

  Poster. AOGS Meeting 2014. Hokkaido


"Seawater density variations in western Indonesia: Implications to 20th Century Indonesian Throughflow"

  Talk. AOGS Meeting 2014. Hokkaido

  Talk. 9th WESTPAC International Scientific Symposium 2014. Nha Trang

  Talk. Ocean Science Meeting 2014. Honolulu

  Talk. International Conference in Climate Change, Marine Life and Livelihoods in the Center of Coral Triangle 2013. Makassar

  Talk (declined). Indian Ocean & Pacific Conference 2013. Bali

  Poster. International Conference on Paleoceanography 2013. Sitges

  Poster. PAGES Open Science Meeting. Goa

  Poster. AGU Fall Meeting 2012. San Francisco

  Poster. AOGS-AGU(WPGM) Joint Assembly 2012. Singapore


"Coral records of 20th century central tropical Pacific climate: Signatures of natural and anthropogenic climate change"

   Talk. International Coral Reefs Symposium 2012. Cairns

   Invited Talk. International Conference on Paleoclimate in Indonesia 2011. Jakarta

   Talk. Climate Change Beijing 2011. Beijing

   Talk. Asia-Oceania Geosciences Society (AOGS) Annual Meeting 2011. Taipei

   Invited Talk in 2010. Hong Kong University. Hong Kong

   Invited Talk in 2010. Dept. Biological Sciences. National University of Singapore. Singapore


"Late 20th century warming and freshening in the central tropical Pacific"
Poster.  PAGES 1st Young Scientists Meeting & 3rd Open Science Meeting 2009, Corvallis
   Talk.  Ocean Science, Technology and Policy Symposium/World Ocean Conference 2009, Manado-Indonesia
   Talk.  International Coral Reefs Symposium 2008, Fort Lauderdale
   Talk.  AGU Fall Meeting 2007, San Francisco
   Talk.  Seventh Workshop on Decadal Climate Variability 2007, Hawai'i



Communicating Science via Media Coverage

Strait Times - "Storm over reef damage incident" on Dec 11, 2014.

Strait Times - "Scientists trying to solve lead mystery" on July 2, 2014.

Zao Bao - "我国海水含铅量下降至1970年代水平 (The level of lead in seawater dropped to 1970" on July 2, 2014.

Deutsche Welle - "Intan Suci Nurhati: Perubahan iklim menurut arsip alam" on Nov 19, 2013.

Environmental Laboratory - "Corals as natural archive of environmental and climate changes" on Nov 4, 2013.

Sunday Times - "Corals are nature's own archives" on July 21, 2013.

The Wesleyan Connection - "Climate scientist Nurhati'05 dives for science" on July 1, 2013.

TODAY - "Corals record monsoon patterns, marine chemistry variations" on June 5, 2013.

Channel 8 evening news(in Mandarin) on June 5, 2013.

MIT News - "Lead from gasoline discovered in Indian Ocean" on June 27, 2012.



Teaching/Mentoring Experience

Guest Lecturer, National University of Singapore's Geography Course [2014], Yale-NUS College [2015]

Guest Lecturer and Thesis Mentor at Institut Teknologi Bandung (Indonesia) [2012]

Mentor for students' science project at Raffles Institution, Singapore [2011].

Fundamentals of Teaching and Learning in Higher Education Course, Georgia Tech [2009]

Lecture & Lab Teaching Assistant for EAS1601 How to Build Habitable Planet Course, Georgia Tech [2006-2009]

Drill Instructor for Elementary Japanese Course, Wesleyan University [2003]

Teaching Apprentice for Intermediate Japanese Course, Wesleyan University [2002]




Reviewers for Paleoceanograpy, Geophysical Research Letters, Geochimica et Cosmochimica Acta, Palaios, Earth and Planetary Science Letters, Geochemical Journal, Earth Surface Processes and Landform and NSF proposals

USAID PEER Science's Tree Isotope Workshop Organizer & Lecturer in Kalimantan [2014]

Convener for AOGS Meetings [2012, 2014]

EAS Department/Cobb Lab's K12 Outreach Programs [2005-2010]

Judge for Georgia Tech Undergraduate Research Spring Symposium [2009, 2010]

Vice-President of Atlanta's PERMIAS (Indonesian College Students Association) [2008]

President of Georgia Tech's ISA (Indonesian Students Association) [2006-2007]



Skills and Certifications

SCUBA: PADI Rescue Diver, AAUS Research Diver, CPR/First Aid/AED certified, DAN Oxygen Provider

Instruments: ICP-OES, Isotope Ratio Mass spectrometer, ICP-MS, AAS.

Languages: Indonesian (native), English (fluent), Japanese (proficient), Arabic (read-only)