FASS Staff Profile

ASSISTANT PROFESSOR CHRIS GOURAMANIS
ASSISTANT PROFESSOR
DEPARTMENT of GEOGRAPHY

Appointment:
ASSISTANT PROFESSOR
Office:
AS2-04-02
Email:
geogc@nus.edu.sg
Tel:
+65 6516 3855
Fax:
Homepage:
http://profile.nus.edu.sg/fass/geogc/
Tabs

Brief Introduction

My primary research priority is to improve our understanding of drought histories, large-scale climate dynamics and the impacts of climatic change in southeast Asia and Australia using high-resolution terrestrial (typically lacustrine) and coastal palaeoenvironmental and palaeoclimate records. I investigate the role of drought and drought recovery from these high-resolution lacustrine and coastal records to improve natural, regional-scale water resource variability and the impacts of coastal hazards to better constrain the impacts of future climate change on food and water security. To do this research I use sedimentological, (geo)chemical and biological proxies and I am interested in short (decadal) and long (multi-million year long) records.

I also investigate the impacts of recent and past coastal hazards (storms and tsunami) in Asia. I examine modern sedimentary deposits of storms and tsunami to try and develop methods to differentiate these types of deposits from geological archives of past events. I primarily use sedimentological, geochemical, geophysical and micropalaeontological (primarily ostracod and foraminifera) proxies, and I utilise sophisticated statistical techniques to provide robust and quantitative analyses of the modern sedimentary deposits and apply these to palaeorecords to try and derive accurate coastal hazard histories to help protect at-risk communities. I have refined the use of Ground Penetrating Radar to identify thin coastal overwash sandsheets in both storm and tsunami effected areas. To improve our understanding of coastal hazards, I have worked closely with insurance companies, government policy and decision makers in Southeast Asia and provided them with much needed information to better protect their coastline, infrastructure and people.

I am interested in developing and testing proxies to refine and better quantify how environmental change is recorded in proxies preserved in geological records. I have significantly improved the use of Australian lacustrine ostracods by examining how they calcify and record environmental (namely water metals and stable isotopes) information in their shells. As well as the ostracod shell chemistry, I have also examined the biogeography of Australian lacustrine ostracods to understand how these species are adapted to and respond to changes in Australian non-marine waterbodies.

I also have a long-standing interest in the initial terrestrialisation of invertebrate and vertebrate groups in the early Palaeozoic and have examined several sites in Australia that offer interesting perspectives that question the established status quo.


Teaching Areas

At NUS, I teach:

  • GE3231 - Natural Hazards (1st Semester 2016/17, 2017/18)
  • GE6223 - Navigating the Boundaries between Science and Policy (2nd Semester 2016/17)
  • GET1001 - Seeing the World through Maps (2nd semester 2017/18)
  • GE3240 - Geographical Research: Developing Ideas (2nd semester 2017/18)
  • GE3230A - Field Studies in Geography: SE Asia (2nd semester 2017/18)

Graduate Supervision

  • Wayne Bannister (2016 to present): Holocene-Anthropocene environmental changes in Tropical East Asia: an investigation of socio-ecological services and ecosystem resilience to anthropogenic disturbance in San Pablo, Laguna Province, Philippines.
  • Chen Qinqin (Christina) (2016 to present): Distinguishing local and non-local sources of pollution using mass balance approach
  • Alex Finnegan (2018 to present): Microplastics in marine and coastal sedimentary archives.

Current Research

With a range of collaborators from other institutions within Singapore and globally, I am currently working on several projects including:

High resolution palaeoclimate from lacustrine systems in Australia

I am developing high-resolution palaeoclimate records to understand how climate and Australia’s hydrological systems have varied over short and long time frames. Primarily I am using ostracods as environmental proxies and examining their shell chemistries (metals and stable isotopes) and the palaeoecology of ostracods. I have and am still working on sites in south eastern Australia and Western Australia.


High resolution palaeoclimate from lacustrine systems in Southeast Asia

I am examining the palaeoenvironmental and palaeoclimatic changes recorded in lacustrine sites from Southeast Asia (Vietnam, Thailand, Indonesia, Malaysia) to derive long and short term histories of climate and hydrological change.


Australian lacustrine hydrogeology and ostracod ecology

I am developing an Australia-wide database of the lacustrine ostracod fauna and associated hydrochemistry and investigating the ecological patterns of ostracod distributions across Australia in relation to lacustrine chemistry, groundwater hydrology, surface geology and climate.


Coastal hazards and coastal evolution of central Vietnam

The Lang Co-Chan May area of central Vietnam is currently undergoing major infrastructure development, but is periodically affected by intense typhoons. My colleagues and I using a suite of techniques, including ground-penetrating radar, sedimentology, stratigraphy, micropalaeontology and geochronology to investigate the coastal evolution of the region and the impacts of past and recent typhoons on the region.


Recent coastal hazards in India

Using a multiproxy approach (including high-frequency ground-penetrating radar, sedimentology and grainsize comparison, stratigraphy, geochemistry and micropalaeontology), I am comparing the 2004 Indian Ocean Tsunami and 2012 Cyclone Thane sedimentary deposits from the south-east coast of India using robust multivariate statistical techniques.


Novel applications to storm and tsunami deposits

The 2004 Indian Ocean Tsunami inundated the west coast of Thailand, and my colleagues and I are:

  • geochemically characterising tsunami, non-tsunami and modern environments to determine the sediment provenance during tsunami events.
  • investigating the geomicrobial communities contained in tsunami and non-tsunami sediment deposits to identify their role in post-disaster human-health issues.
  • geophysical (ground penetrating radar) analysis of storm and tsunami overwash deposits.

Biogeography of Southeast Asian coastal and non-marine ostracods

I am examining the ostracod taxonomy, ecology and biogeography of non-marine and coastal ostracods across Southeast Asia to develop this group as potential palaeoenvironmental and palaeoclimatic proxies in Southeast Asia.


Groundwater resource potential from onshore sediments in Singapore

I am investigating the subterranean sedimentary units from onshore Singapore to evaluate the potential for utilisation as a groundwater resource.


Research Interests

I have a broad range of research interests spanning:

  • Palaeoenvironmental and palaeoclimatic reconstructions from lacustrine and coastal environments, using stable isotopes and trace metals preserved in biogenic carbonates (ostracods and foraminifera); ecology of microfossils (ostracods and foraminifera); and, sediments (geochemistry, grainsize analysis).
  • Coastal evolution and geomorphological changes in response to sea level fluctuation and coastal hazards (including storms and tsunami).
  • Evaluation of modern and palaeo-coastal hazard sedimentary deposits, including the analysis of sedimentology, geochemistry, microfauna, geomorphology and the development and application of shallow surface geophysics.
  • Ecology and biogeography of Australian and southeast Asian non-marine and coastal ostracods.
  • Lacustrine, coastal marine and groundwater hydrochemistry.
  • Management strategies for non-marine and coastal ecosystems integrating current climate change scenarios.
  • Siluro-Devonian marine to terrestrial trace fossil assemblages and the terrestrialisation of the tetrapods.

Publications

ARTICLES IN JOURNALS

  • Pile, J., Gouramanis, C., Switzer, A.D., Rush, B., Reynolds, I., Ryrie, S., Soria, L. (2018) Examples not numbers: Using historical events to present regional hazard information and stimulate client thinking in the insurance industry. International Journal of Hazard Risk Reduction 27: 439-450 pdf
  • Ackerley, D., Reeves, J., Barr, C., Bostock, H., Fitzsimmons, K., Fletcher, M.-S., Gouramanis, C., McGregor, H., Mooney, S., Phipps, S., Tibby, J., Tyler, J. (2017). Evaluation of PMIP2 and PMIP3 simulations of mid-Holocene climate in the Indo-Pacific, Australasian and Southern Ocean regions. Climate of the Past Discussions 13: 1661-1684 pdf
  • Gouramanis, C., Adam D. Switzer, A.D., Jankaew, K, Bristow, C.S., Pham, T.D., ldefonso, S. (2017) High-frequency coastal overwash deposits from Phra Thong Island, Thailand. Scientific Reports, 7:43742, DOI: 10.1038/srep43742 pdf - open access
  • Gouramanis, C., De Deckker, P., Wilkins, D., Dodson, J. (2016) High-resolution, multi-proxy palaeoenvironmental changes recorded from Two Mile Lake, southern Western Australia: Implications for Ramsar playa sites. Marine and Freshwater Research 67, 748-770. pdf
  • Chen, M., Boyle, E.A., Switzer, A.D. & Gouramanis, C. (2016) A sedimentary record of the anthropogenic lead (Pb), Pb isotopes and other trace metals from the Singapore region. Environmental Pollution 213, 446-459. pdf
  • Gouramanis, C., McLoughlin, S. (2016) On some Siluro-Devonian trace fossils preserved in the Mereenie Sandstone in Kings Canyon National Park, Amadeus Basin, Northern Territory, Australia. Alcheringa 40, 118-128. pdf - open access
  • Yap, W., Lee, Y.S. Gouramanis, C., Switzer, A.D., Yu, F., Lau, A.Y.A., & Terry, J.P. (2015) A Historical Typhoon Database for the Southeastern Chinese Coastal Provinces, 1951 to 2012. Ocean and Coastal Management 108: 109-115. pdf
  • Gouramanis, C., Switzer, A.D., Polivka, P., Bristow, C.S, Jankaew, K., Pham, T.D. Lee, Y.S., Rubin, C. & Ramos, I.S. (2015). Ground Penetrating Radar examination of thin tsunami beds – A case study from Phra Thong Island, Thailand. Sedimentary Geology 329: 149-165. pdf
  • Switzer, A.D., Yu, F., Gouramanis, C., Soria, J.L.A. & Pham, T.D. (2014). Integrating different records to assess coastal hazards at multicentury timescales. Journal of Coastal Research, Special Issue No. 70, 723-729. pdf
  • Gouramanis, C., De Deckker, P., Switzer, A.D. & Wilkins, D. (2013). Cross-continent comparison of high-resolution Holocene climate records from southern Australia - deciphering the impacts of far-field teleconnections. Earth-Science Reviews 121: 55-72. pdf
  • Wilkins, D., Gouramanis, C., De Deckker, P., Fifield, K. & Olley, J. (2013). Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia. The Holocene 23: 784-795. pdf
  • Thao, N.V., Thanh, T.D., Saito, Y. & Gouramanis, C. (2013). Monitoring coastline change in the Red River Delta using remotely sensed data. Journal of Marine Science and Technology 13(2): 151-160. pdf - available upon request
  • Gouramanis, C., Dodson, J. R., Wilkins, D., De Deckker, P. & Chase, B.M. (2012). Holocene palaeoclimate and sea level fluctuation recorded from the coastal Barker Swamp, Rottnest Island, south-western Western Australia. Quaternary Science Reviews 54: 40-57. pdf
  • Wilkins, D., De Deckker, P., Fifield, K.L., Gouramanis, C. & Olley, J. (2012).  Comparative optical and radiocarbon dating of laminated Holocene sediments in two maar lakes: Lake Keilambete and Lake Gnotuk, south-western Victoria, Australia. Quaternary Geochronology 9: 3-15. pdf
  • Gouramanis, C., Wilkins, D. & De Deckker, P. (2010). 6000 years of environmental changes recorded in Blue Lake, South Australia, based on ostracod ecology and valve chemistry. Palaeogeography, Palaeoclimatology, Palaeoecology 297: 223-237. pdf
  • Gouramanis, C. & De Deckker, P. (2010). Alkalinity control on the partition coefficients in lacustrine ostracodes from Australia. Geology 38: 359-362. pdf
  • Gouramanis, C. (2009). High-resolution Holocene palaeoenvironmental and palaeoclimatic changes recorded in Southern Australian lakes based on ostracods and their chemical composition. Quaternary Australasia 26(2): 34-35. pdf - available upon request
  • Gouramanis, C., Webb, J. A. & Warren, A. A. (2003). Fluviodeltaic sedimentology and ichnology of part of the Silurian Grampians Group, western Victoria. Australian Journal of Earth Sciences 50(5): 811-825. pdf

CONFERENCE PAPERS

  • Gouramanis, C., Switzer, A.D., Bristow, C., Jankaew, K., Rubin, C., Pham, T.D., Lee, Y.S. (2014) Thin-bed Ground-Penetrating Radar analysis of preserved modern and palaeotsunami deposits from Phra Thong Island, Thailand. Proceedings of the 15th International Conference on Ground Penetrating Radar pp. 1047-1052. pdf
  • Lee, Y.S., Yu, F.L., Switzer, A.D., Gouramanis, C., Lau, A.Y.A. & Terry, J.P. (2012). Developing a historical typhoon database for the southeastern Chinese coastal provinces, 1951-2010. Proceedings of Annual International Conference on Geological and Earth Science (GEOS 2012). pdf - available upon request
  • Lee, Y.S., Gouramanis, C., Switzer, A.D., Bristow, C.S., Soria J.L., Pham, T.D., Hoang, Q.D. & Dinh, L.D. (2012). Ground penetrating radar (GPR) survey of formerly mined coastal dunes in central Vietnam: a rapid, non-invasive method for investigating the extent and impact of mined areas. Proceedings of Annual International Conference on Geological and Earth Science (GEOS 2012). pdf - available upon request

PUBLISHED REPORTS

  • Lân, T. Đ., Thảo, N. V., Chiến, Đ. Đ., Hương, Đ. T. T., Hà, N. T. T., Vệ, N. Đ., Tường, B. M., Hoa, N. T. P., Huy, Đ. V., Tiến, Đ. Đ., Lượng, P. V., Gouramanis, C. (2009) Ứng dụng cong nghệ hẹ thống thông tin địa lý (GIS) trong quản lý di sản thiên nhiên thế giới vịnh Hạ Long – Báo Cáo Tóm Tắt. UBND Tỉng Quảng Ninh Sở Khoa Học Và Công Nghệ Quảng Ninh. Viện Tài Nguyên và Môi Trường Biển, Hải Phòng. Application of geographic information systems technology (GIS) in the management of the world's natural heritage Ha Long Bay - Summary Report. 32 pgs.

Other Information

For more information see also:

LinkedIn: https://sg.linkedin.com/in/chrisgouramanis

Google Scholar: https://scholar.google.com.au/citations?user=GQ8DM0UAAAAJ&hl=en

Researchgate: https://www.researchgate.net/profile/Chris_Gouramanis

 



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