Prof. A.S. Ratnayake

Prof. A.S. Ratnayake

Professor

PhD (Shimane University, Japan)
M.Sc. (Shimane University, Japan)
BSc (Peradeniya)
Email :as_ratnayake@uwu.ac.lk
Phone : +94 553559113

Research Interest

Petroleum Geology
Stratigraphy and Sedimentology
Marine Geology
Geochemistry

Peer-reviewed Indexed Journal Papers

Ratnayake AS*, Wijewardhana TDU, Haraguchi T, Goto K, Ratnayake NP, Tetsuka H, Yokoyama Y, Miyairi Y, Attanayake AMANB (2023). Sedimentological observations and geochemical characteristics of paleo-tsunami deposits along the east coast of Sri Lanka in the Indian Ocean. https://doi.org/10.1016/j.quaint.2023.02.015

Dushyantha N*, Ratnayake N, Premasiri R, Batapola N, Panagoda H, Jayawardena C, Chandrajith R, Ilankoon IMSK, Rohitha S, Ratnayake AS, Abeysinghe B, Dissanayake K, Dilshara P (2023). Geochemical exploration for prospecting new rare earth elements (REEs) sources: REE potential in lake sediments around Eppawala Phosphate Deposit, in Sri Lanka. Journal of Asian Earth Sciences 243, 105515. https://doi.org/10.1016/j.jseaes.2022.105515

Perera ULHP, Subasinghe HCS, Ratnayake AS*, Weerasingha WADB, Wijewardhana TDU (2022). Maritime pollution in the Indian Ocean after the MV X-Press Pearl accident. Marine Pollution Bulletin 182, 114301. https://doi.org/10.1016/j.marpolbul.2022.114301

Ratnayake AS* (2022). An overview of organic geochemical indices to evaluate conventional petroleum source rocks: a summary of examples from the Indian Subcontinent. Petroleum Science and Technology, https://doi.org/10.1080/10916466.2022.2134893

Subasinghe CS, Ratnayake AS*, Roser B, Sudesh M, Wijewardhana DU, Attanayake N, Pitawala J (2022). Global distribution, genesis, exploitation, applications, production, and demand of industrial heavy minerals. Arabian Journal of Geosciences 15, 1616. https://doi.org/10.1007/s12517-022-10874-0

Ratnayake AS*, Perera ULHP (2022). Coastal zone management in Sri Lanka: A lesson after recent naval accidents. Marine Pollution Bulletin 182, 113994. https://doi.org/10.1016/j.marpolbul.2022.113994

Gunasinghe GP*, Ratnayake NP, Ratnayake AS, Samaradivakara GVI, Dushyantha NP, Jayaratne R, Dinusha KA, Silva A (2022). Monsoon‑driven geomorphological changes along the west coast of Sri Lanka: A combined approach utilizing ‘CoastSat’ and Google Earth Engine. Ocean Science Journal 57, 475–492. https://doi.org/10.1007/s12601-022-00081-z

Dushyantha N*, Ilankoon IMSK, Ratnayake NP, Premasiri HMR, Dharmaratne PGR, Abeysinghe AMKB, Rohitha LPS, Chandrajith R, Ratnayake AS, Dissanayake DMDOK, Batapola NM (2022). Recovery potential of rare earth elements (REEs) from the gem mining waste of Sri Lanka: A case study for mine waste management. Minerals 12, 1411. https://doi.org/10.3390/min12111411

Subasinghe HCS, Ratnayake AS* (2022). General review of titanium ores in exploitation: present status and forecast. Comunicacoes Geologicas 109, 21–31. https://doi.org/10.34637/aab4-mk81

Weerasingha WADB, Ratnayake AS* (2022). Coastal landform changes on the east coast of Sri Lanka using remote sensing and geographic information system (GIS) techniques. Remote Sensing Applications: Society and Environment 26, 100763. https://doi.org/10.1016/j.rsase.2022.100763

Hossain HMZ*, Kawahata H, Sampei Y, Feakins SJ, Ratnayake AS (2022). Organic matter and sedimentary accumulation rates in a transect of cores in the Bay of Bengal offshore Bangladesh and Andaman Sea offshore Myanmar. Marine and Petroleum Geology 142, 105769. https://doi.org/10.1016/j.marpetgeo.2022.105769

Belem A, Bell T*, Burdett HL, Ibarra D, Kaushal N, Keenan B, Klimaszewski-Patterson A, Mette M, Naeher S, Onafeso OD, Panmei1 C, Ratnayake AS, Truax O (2022). Paleoclimatology and paleoceanography perspectives on integrated, coordinated, open, networked (ICON) science. Earth and Space Science e2021EA002115. https://doi.org/10.1002/essoar.10508554.1

Subasinghe HCS, Ratnayake AS* (2021). Processing of ilmenite into synthetic rutile using ball milling induced sulphurisation and carbothermic reduction. Minerals Engineering 173, 107197. https://doi.org/10.1016/j.mineng.2021.107197

Ratnayake AS* (2021). Late Cretaceous to Miocene paleoclimatic changes in the Indian Ocean: insights from the deepwater Mannar Basin, Sri Lanka. Geo-Marine Letters 41, 37. https://doi.org/10.1007/s00367-021-00710-x

Ratnayake AS* (2021). Paleoenvironments and source rock potential of Dorado North well in the Mannar Basin (Indian Ocean). Arabian Journal of Geosciences 14, 792. https://doi.org/10.1007/s12517-021-07127-x

Senanayake NDM, Ratnayake AS*, Wijesinghe UMP, Ratnayake NP (2021). Geochemistry and sedimentology of tropical mangrove sediments along the southwest coast of Sri Lanka: Fingerprints for development history of wetlands. Regional Studies in Marine Science 46, 101884. https://doi.org/10.1016/j.rsma.2021.101884

Wijewardhana TDU, Subasinghe HCS, Ratnayake AS* (2021). Value addition to ilmenite using carbonized waste coconut shells: A mechanochemical approach aided with powdered seashells as a rate raiser. Mining, Metallurgy and Exploration 38, 1573–1587. https://doi.org/10.1007/s42461-021-00420-z

Subasinghe HCS, Ratnayake AS*, Sameera KAG (2021). State-of-the-art and perspectives in the heavy mineral industry of Sri Lanka. Mineral Economics 34, 427–439. https://doi.org/10.1007/s13563-021-00274-3

Wijewardhana TDU, Ratnayake AS* (2021). Applicability of carbothermic reduction for upgrading Sri Lankan ilmenite ores: Towards converting ilmenite into synthetic rutile by mechanical activation. Bulletin of the National Research Centre 45, 1–10. https://doi.org/10.1186/s42269-021-00608-9

Gunasinghe GP*, Ruhunage L, Ratnayake NP, Ratnayake AS, Samaradivakara GVI, Jayaratne, R (2021). Influence of manmade effects on geomorphology, bathymetry and coastal dynamics in a monsoon-affected river outlet in Southwest coast of Sri Lanka. Environmental Earth Sciences 80, 1–16. https://doi.org/10.1007/s12665-021-09555-0

Dushyantha NP*, Ratnayake NP, Panagoda H, Jayawardena C, Ratnayake AS (2021). Phosphate mineral accumulation in lake sediment to form a secondary phosphate source: A case study in lake sediment around Eppawala Phosphate Deposit (EPD) in Sri Lanka. International Journal of Sediment Research 36, 532–541. https://doi.org/10.1016/j.ijsrc.2020.12.001

Dushyantha NP*, Ratnayake NP, Premasiri HMR, Ilankoon IMSK, Hemalal PVA, Jayawardena CL, Chandrajith R, Rohitha LPS, Abeysinghe AMKB, Dissanayake DMDOK, Dharmaratne PGR, Ratnayake AS, Batapola NM (2021). Leaching of Rare Earth Elements (REEs) from lake sediments around Eppawala phosphate deposit, Sri Lanka: A secondary source for REEs. Hydrometallurgy, 105751. https://doi.org/10.1016/j.hydromet.2021.105751

Loisel J*, Gallego-Sala AV, Amesbury MJ, Magnan G, Anshari G, Beilman DW, Benavides JC, Blewett J, Camill P, Charman DJ, Chawchai S, Hedgpeth A, Kleinen T, Korhola A, Large D, Mansilla CA, Müller J, van Bellen S, West JB, Yu Z, Bubier JL, Garneau M, Moore T, Sannel ABK, Page S, Väliranta M, Bechtold M, Brovkin V, Cole LES, Chanton JP, Christensen TR, Davies MA, De Vleeschouwer F, Finkelstein SA, Frolking S, Gałka M, Gandois L, Girkin N, Harris LI, Heinemeyer A, Hoyt AM, Jones MC, Joos F, Juutinen S, Kaiser K, Lacourse T, Lamentowicz M, Larmola T, Leifeld J, Lohila A, Milner AM, Minkkinen K, Moss P, Naafs BDA, Nichols J, O’Donnell J, Payne R, Philben M, Piilo S, Quillet A, Ratnayake AS, Roland TP, Sjӧgersten S, Sonnentag O, Swindles GT, Swinnen W, Talbot J, Treat C, Valach AC, Wu J (2021). Expert assessment of future vulnerability of the global peatland carbon sink. Nature Climate Change 11, 70–77. https://doi.org/10.1038/s41558-020-00944-0

Goonetilleke IA, Subasinghe HCS, Ratnayake AS*, Jayawardana DT (2021). Acid-assisted leaching of iron and manganese from Sri Lankan laterite: A potential source of alumina production. Journal of the National Science Foundation of Sri Lanka 49, 303–310. http://dx.doi.org/10.4038/jnsfsr.v49i2.10177

Wijesinghe UMP, Ratnayake AS*, Ratnayake NP (2021). Geochemistry of Negombo Lagoon sediments in Sri Lanka: Implications for environmental monitoring. Journal of the National Science Foundation of Sri Lanka 49, 89–98. http://dx.doi.org/10.4038/jnsfsr.v49i1.9839

Kularathna EKCW*, Pitawala HMTGA, Senaratne A, Ratnayake AS (2020). Play distribution and the hydrocarbon potential of the Mannar Basin, Sri Lanka. Journal of Petroleum Exploration and Production Technology 10, 2225–2243. https://doi.org/10.1007/s13202-020-00902-8

Palamakumbure L, Ratnayake AS*, Premasiri HMR, Ratnayake NP, Katupotha J, Dushyantha N, Weththasinghe S, Weerakoon WAP (2020). Sea-level inundation and risk assessment along the south and southwest coasts of Sri Lanka. Geoenvironmental Disasters 7, 17 https://doi.org/10.1186/s40677-020-00154-y

Ratnayake AS*, Sampei Y, Ratnayake NP (2019). Characteristics of sedimentary organic matter and vascular plants in tropical brackish Bolgoda Lake, Sri Lanka: Implications for paleoecology and chemotaxonomy. Regional Studies in Marine Science 30, 100726. https://doi.org/10.1016/j.rsma.2019.100726

Ratnayake AS*, Sampei Y (2019). Organic geochemical evaluation of contamination tracers in deepwater well rock cuttings from the Mannar Basin, Sri Lanka. The Journal of Petroleum Exploration and Production Technology 9, 989–996. https://doi.org/10.1007/s13202-018-0575-8

Ratnayake NP, Ratnayake AS*, Azoor RM, Weththasinghe SM, Seneviratne IDJ, Senarathne N, Premasiri R, Dushyantha N (2019). Erosion processes driven by monsoon events after a beach nourishment and breakwater construction at Uswetakeiyawa beach, Sri Lanka. SN Applied Sciences 1, 52. https://doi.org/10.1007/s42452-018-0050-7

Dushyantha NP*, Hemalal PVA, Jayawardena CL, Ratnayake AS, Ratnayake NP (2019). Application of geochemical techniques for prospecting unconventional phosphate sources: A case study of the lake sediments in Eppawala area Sri Lanka. Journal of Geochemical Exploration 201, 113–124. https://doi.org/10.1016/j.gexplo.2019.02.010

Ratnayake AS*, Sampei Y, Ratnayake NP (2019). Molecular indicators of early stage diagenesis in the tropical coastal Bolgoda Lake, Sri Lanka. Journal of National Science Foundation of Sri Lanka 47, 69–77. http://dx.doi.org/10.4038/jnsfsr.v47i1.8927

Ratnayake AS*, Ratnayake NP, Sampei Y, Vijitha AVP, Jayamali SD (2018). Seasonal and tidal influence for water quality changes in coastal Bolgoda Lake system, Sri Lanka. Journal of Coastal Conservation 22, 1191–1199. https://doi.org/10.1007/s11852-018-0628-7

Amalan K, Ratnayake AS*, Ratnayake NP, Weththasinghe SM, Dushyantha N, Lakmali N, Premasiri R (2018). Influence of nearshore sediment dynamics on the distribution of heavy mineral placer deposits in Sri Lanka. Environmental Earth Sciences 77, 737. https://doi.org/10.1007/s12665-018-7914-4

Ratnayake AS*, Kularathne CW, Sampei Y (2018). Assessment of hydrocarbon generation potential and thermal maturity of the offshore Mannar Basin, Sri Lanka. The Journal of Petroleum Exploration and Production Technology 8, 641–654. https://doi.org/10.1007/s13202-017-0408-1

Ratnayake NP, Ratnayake AS*, Keegle PV, Mallawa Arachchi MAKM, Premasiri HMR (2018). An analysis of beach profile changes subsequent to the Colombo Harbor Expansion Project, Sri Lanka. Environmental Earth Sciences 77, 24. https://doi.org/10.1007/s12665-018-7234-8

Dubois N*, Saulnier-Talbot É, Mills K, Gell P, Battarbee R, Bennion H, Chawchai S, Dong X, Francus P, Flower R, Gomes DF, Gregory-Eaves I, Humane S, Kattel G, Jenny J-P, Langdon P, Massaferro J, McGowan S, Mikomägi A, Ngoc NTM, Ratnayake AS, Reid M, Rose N, Saros J, Schillereff D, Tolotti M, Valero-Garcés B (2018). First human impacts and responses of aquatic systems: A review of palaeolimnological records from around the world. The Anthropocene Review 5, 28–68. https://doi.org/10.1177/2053019617740365

Früh-Green GL*, Orcutt BN, Rouméjon S, Lilley MD, Morono Y, Cotterill C, Green S, Escartin J, John BE, McCaig AM, Cannat M, Ménez B, Schwarzenbach EM, Williams MJ, Morgan S, Lang SQ, Schrenk MO, Brazelton WJ, Akizawa N, Boschi C, Dunkel KG, Quéméneur M, Whattam SA, Mayhew L, Harris M, Bayrakci G, Behrmann J-H, Herrero-Bervera E, Hesse K, Liu H-Q, Ratnayake AS, Twing K, Weis D, Zhao R, Bilenker L (2018). Magmatism, serpentinization and life: Insights through drilling the Atlantis Massif (IODP Expedition 357). Lithos 323, 137–155. https://doi.org/10.1016/j.lithos.2018.09.012

Rouméjon S*, Früh-Green GL, Orcutt BN, Green S, Cotterill C, Akizawa N, Bayrakci G, Behrmann J-H, Herrero-Bervera E, Boschi C, Brazelton W, Cannat M, Dunkel KG, Escartin J, Harris M, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew L, McCaig A, Ménez B, Morgan S, Morono Y, Quéméneur M, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing K, Weis D, Whattam SA, Williams M, Zhao R (2018). Alteration heterogeneities in peridotites exhumed on the southern wall of the Atlantis Massif (IODP Expedition 357). Journal of Petrology 59, 1329–1358. https://doi.org/10.1093/petrology/egy065

Ratnayake AS, Sampei Y*, Ratnayake NP, Roser BP (2017). Middle to late Holocene environmental changes in the depositional system of the tropical brackish Bolgoda Lake, coastal southwest Sri Lanka. Palaeogeography Palaeoclimatology Palaeoecology 465, 122–137. http://dx.doi.org/10.1016/j.palaeo.2016.10.024

Ratnayake AS*, Sampei Y, Kularathne CW (2017). Current status of hydrocarbon exploration in Sri Lanka. International Journal of Oil, Gas and Coal Technology 16, 377–389. https://doi.org/10.1504/IJOGCT.2017.087879

Falcon-Suarez I*, Bayrakci G, Minshull TA, North LJ, Best AI, Rouméjon S, Früh-Green GL, Orcutt BN, Green S, Cotterill C, Akizawa N, Behrmann J-H, Herrero-Bervera E, Boschi C, Brazelton W, Cannat M, Dunkel KG, Escartin J, Harris M, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew L, McCaig A, Ménez B, Morgan S, Morono Y, Quéméneur M, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing K, Weis D, Whattam SA, Williams M, Zhao R (2017). Elastic and electrical properties and permeability of serpentinites from Atlantis Massif, Mid-Atlantic Ridge. Geophysical Journal International 211, 686–699. https://doi.org/10.1093/gji/ggx341

Ratnayake AS*, Pitawala A (2009). Weathering of monuments at Jethawanaramaya Complex in North-Central, Sri Lanka. Acta Geologica Sinica 83, 1024–1030. https://doi.org/10.1111/j.1755-6724.2009.00109.x

Peer-reviewed Non-indexed Journal Papers

Subasinghe HCS, Ratnayake AS*, Wijewardhana TDU, Weerasingha WADB, Pitawala HMJC, Attanayake AMANB (2022). Preliminary investigations on Murunkan clay deposit in Sri Lanka. Journal of Geological Society of Sri Lanka 23, 1–8.

Hossain HMZ, Sampei Y*, Al Istiak HMR, Mahid TR, Ratnayake AS, Naseem S, Hakro AAAD (2020). Source of organic matter and depositional environments of the middle Paleocene Lakhra coals, Sindh Province, Pakistan. Researches in Organic Geochemistry 36, 1–11.

Bandara AS, Weerasinghe DA, Ratnayake AS* (2020). Determination of the regional and residual gravity anomalies to reconstruct basin structures of the Cauvery Basin. Journal of Geological Society of Sri Lanka 21, 21–31.

Weththasinghe SM*, Ratnayake AS, Dushyantha N, Ratnayake NP, Samaradivakara GVI, Vijitha AVP (2018). Sub-bottom features and physical properties of water of the Tangalle Bay, Sri Lanka. Journal of Geological Society of Sri Lanka 19, 17–27.

Ratnayake AS*, Dushyantha N, De Silva N, Somasiri HP, Jayasekara NN, Weththasinghe SM, Samaradivakara GVI, Vijitha AVP, Ratnayake NP (2017). Sediment and physicochemical characteristics in Madu-ganga Estuary, southwest Sri Lanka. Journal of Geological Society of Sri Lanka 18, 43–52.

Dushyantha N*, Hemalal PVA, Jayawardena CL, Ratnayake AS, Premasiri HMR, Ratnayake NP (2017). Nutrient characteristics of lake sediments around Eppawala Phosphate Deposit, Sri Lanka. Journal of Geological Society of Sri Lanka 18, 33–42.

Ratnayake AS* (2016). Regionwide geodynamic analyses of the Cenozoic carbonate burial in Sri Lanka related to climate and atmospheric CO2. International Journal of Economic and Environmental Geology 7, 1–9.

Ratnayake AS* (2016). Links between paleoclimate and prehistorical human dispersal in Sri Lanka: A critical view. Interdisciplinary Environmental Review 17, 249–260.

Ratnayake AS* (2016). Evolution of coastal landforms during the Holocene Epoch along the west and southeast coasts of Sri Lanka. Interdisciplinary Environmental Review 17, 60–69.

Ratnayake AS*, Sampei Y (2015). Preliminary prediction of the geothermal activities in the frontier Mannar Basin, Sri Lanka. Journal of Geological Society of Sri Lanka 17, 19–29.

Ratnayake AS, Sampei Y* (2015). Characterization of organic matter and depositional environment of the Jurassic small sedimentary basins exposed in the northwest onshore area of Sri Lanka. Researches in Organic Geochemistry 31, 15–28.

Ratnayake AS*, Sampei Y, Kularathne CW (2014). Stratigraphic responses to major depositional events from the Late Cretaceous to Miocene in the Mannar Basin, Sri Lanka. Journal of Geological Society of Sri Lanka 16, 5–18.

Ratnayake AS*, Pitawala A (2014). Prediction of ungauged river basin for hydropower potential and flood risk mitigation: a case study at Gin River, Sri Lanka. Interdisciplinary Environmental Review 15, 203–214.

Feature Article

Ratnayake AS* (2020). Characteristics of lowland tropical peatlands: formation, classification, and decomposition. Journal of Tropical Forestry and Environment 10, 1–16.

Ratnayake AS* (2018). Paleoenvironmental reconstructions using organic source indicators: A summary of examples from Sri Lanka. Journal of Tropical Forestry and Environment 8, 1–12.

Patents

Subasinghe HCS, Ratnayake AS, Wijewardhana TDU (2022). Upgrading ilmenite using a combination of ball milling induced sulphurisation and carbothermic reduction under normal airflow and atmospheric pressure. International patent classification (IPC): B 01J 37/00, C 01G 23/00. Published in the government gazette in Sri Lanka dated on 13.01.2022. Please refer the following link for the gazette. http://documents.gov.lk/en/gazette.php

Proceedings Volumes/Book Chapters

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Expedition 357 Summary. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.101.2017

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Expedition 357 Methods. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.102.2017

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Eastern Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.103.2017

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Central Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.104.2017

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Western Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.105.2017

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2017). Northern Sites. In Früh-Green GL, Orcutt BN, Green SL, Cotterill C and the Expedition 357 Scientists, Atlantis Massif Serpentinization and Life. Proceedings of the International Ocean Discovery Program, 357: College Station, TX (International Ocean Discovery Program). http://dx.doi.org/10.14379/iodp.proc.357.106.2017

Früh-Green GL*, Orcutt BN, Green SL, Cotterill C, Morgan S, Akizawa N, Bayrakci G, Behrmann J-H, Boschi C, Brazelton WJ, Cannat M, Dunkel KG, Escartin J, Harris M, Herrero-Bervera E, Hesse K, John BE, Lang SQ, Lilley MD, Liu H-Q, Mayhew LE, McCaig AM, Menez B, Morono Y, Quéméneur M, Rouméjon S, Ratnayake AS, Schrenk MO, Schwarzenbach EM, Twing KI, Weis D, Whattam SA, Williams M, Zhao R (2016). Expedition 357 Preliminary Report: Atlantis Massif Serpentinization and Life. International Ocean Discovery Program. http://dx.doi.org/10.14379/iodp.pr.357.2016

Conference Proceedings (Extended abstracts)

Wijewardhana TDU, Ratnayake AS* (2021). Paleo-tsunami evidence in Sri Lanka and south India. Vavuniya University International Research Conference. University of Vavuniya, Vavuniya, Sri Lanka, pp. 319–323

De Silva UHNH, Somasiri RBHP, Jayasekara NNL, Ratnayake AS, Dushyantha N, Weththasinghe SM, Samaradivakara GVI, Vijitha AVP, Ratnayake NP* (2017). Dynamics of the Madu-Ganga Estuary. International Symposium on Earth Resources Management and Environment (ISERME), pp. 77–81.

Ratnayake AS*, Pitawala A (2009). Weathering of monuments at Jethawanaramaya by biological process. Peradeniya University Research Sessions, Sri Lanka 14, 347–349.

Peer-reviewed Abstracts

I have published about 80 abstracts in national and international conferences such as Annual Technical Sessions of the Geological Society of Sri Lanka, American Geophysical Union Fall Meeting, Japanese Association of Petroleum Technology, and Japanese Association of Organic Geochemists, etc.

Positions Held

Postdoctoral Researcher, Shimane University, Japan

Geologist, National Building Research Organization, Sri Lanka

Geologist, Upper Kotmale Hydropower Project, Sri Lanka

Geologist, Central Engineering Consultancy Bureau, Sri Lanka

Memberships and Awards

Life Member (LM 107) of Geological Society of Sri Lanka (GSSL)

Best Research Award: Symposium on Mineral Resources of Sri Lanka (2017)

P.G. Cooray Medal: The Most Outstanding Young Geoscientist in Sri Lanka (2015)

Japanese Government (Monbukagakusho) Scholarship (2012-2015)

Japanese Government (Monbukagakusho) Scholarship (2010-2012)

Teaching

MRT 251-3 Mineralogy and Petrology – II
MRT 327-3 Exploration and Extraction
MRT 377-2 Geochemistry
MRT 321-2 Mineral Exploration Methods
MRT 161-3 Mineralogy and Petrology – I