Conference program and abstracts - Coastal-Change.Org

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Palaeo-environmental reconstructions and sea level change during early Holocene in Pearl River delta, southern China Kangyou Huang 1 , Zhuo Zheng 1 ,Yongqiang Zong 2 , Linglong Cao 3 , Chong Wang 1 1 Department of Earth Sciences, Sun Yet-san University, Guangzhou, 510275 China 2 Department of Earth Sciences, The University of Hong Kong, Hong Kong, China 3 South China Sea Marine Engineering and Environment Institute, SOA, Guangzhou, 510310 China ABSTRACT Sea levels have fluctuated throughout geological time, periodically encroaching or retreating across coastal plains (Lambeck et al., 2001). The previous sea-level curves have been proposed for the coast of China, which sea-level curves indicate a complex history of Holocene sea level, and so the debate on whether or not a higher mid-Holocene sea-level highstand exists in the coast of China has continued (Zong, 2004). Although the early Holocene history of the Pearl River delta (PRD) is reconstructed based on a series of sediment cores, but there is scarce of assured evidence about when and where the high sea level arrived at Pearl River delta since the last glacial. In present study, pollen analyses of drilling core SS0901 and SS0904 provided new evidence for the interactions between sea-level rise in the early Holocene in PRD. Based on sixteen radiocarbon data, the rapid sea-level rise flooded Sanshui basin and the deltaic sedimentation has been proved during 9000 cal yr BP. The drilling core SS0901 indicated the sedimentary environment changed as: fluvial facies, estuarine sediment, tidal flat facies, estuarine sediment and fluvial facies. The mangrove pollen spectrum revealed that high seal level occurred on 8400 cal yr BP, which was verified by microfossil diatom analyses. During mid- late Holocene, the swamp developed widely in PRD, where the vegetation was characterized by Cyperaceae, Poaceae and Glyptostrobus pensilis. But the vegetation disturbed by human agricultural activity during 2500-2200 cal yr BP, especially, the increase of Poaceae(cereal type) pollen meant the rice agriculture started spread along northern edge of the deltaic plain. This research is funded by Foundation for Distinguished Young Talents in Higher Education of Guangdong (FDYT:LYM10009) and the Fundamental Research Funds for the Central Universities (Grant No. 11lgpy53), National Natural Science Foundation of China (41001118,41230101) and State Oceanic Administration Yong Marine Science Fund (NO: 2012114). The Fourth IGCP 588: PREPARING FOR COASTAL CHANGE 25
Late glacial sea level minima in the Western British Isles J.A.G. Cooper 1 , R. Plets 1 , D.W.T., Jackson 1 . R.J. Quinn 1 , A. Long 2 , L.Callard 2 , J.T. Kelley 3 , D.F. Belknap 3 , R.Edwards 4 , D. Long 5 , X. Monteys 6 1 Environmental Sciences, University of Ulster, Coleraine, Northern Ireland, UK 2 Dept of Geography, Durham University, UK 3 Dept Geological Sceinces, University of Maine, Orono, USA 4 Natural Sciences, University of Dublin, Ireland 5 British Geological Survey, Edinburgh, UK 6 Geological Survey of Ireland, Dublin, Ireland ABSTRACT Knowledge of the earth-ice-ocean interactions during deglaciation derives from a combination of field observations and earth models. Such models are commonly tested against detailed relative sea level (RSL) records. The mid-late Holocene RSL record of the British Isles is spatially variable and well-constrained and has provided a globally important yardstick for such testing. The British RSL record, however, suffers from a lack of data from depths greater than 10m below present sea level and ages much greater than 7-8000 years BP. Consequently, the different modelled RSL curves show great diversity in the depth and timing of sea level minima, even though they achieve a high degree of fit with the Holocene RSL observations. This lack of an observational yardstick hampers the understanding of isostatic adjustment during and since deglaciation. Investigations of lower sea levels during the early Holocene and late glacial periods require a specific range of approaches. Multibeam bathymetry and seismic stratigraphy have been used to good effect to identify lower-than-present sea level indicators that have then been confirmed and dated using vibracoring. In this paper we describe the approaches to, and initial results from, such investigations of the lowest late glacial sea levels in the western British Isles. 26 The Fourth IGCP 588: PREPARING FOR COASTAL CHANGE
Page 12 and 13: CONTENT Tsunami history along the c
Page 14 and 15: A Methodology to Develop a Report C
Page 16 and 17: Tsunami history along the coastline
Page 18 and 19: 2004 Tsunami and Tsunamigenic sedim
Page 20 and 21: Coastal resilience on microbial pol
Page 22 and 23: Hazard Line Mapping Of Mahadi Delta
Page 24 and 25: Millennial-scale records of North A
Page 26 and 27: Indian Southwest Monsoon Variabilit
Page 28 and 29: Coastal wind climate, coastal dunes
Page 30 and 31: Benthic Foraminifera and siltation
Page 32 and 33: Wetland Ecosystem of Mahanadi Delta
Page 34 and 35: pollen and charcoal concentration,
Page 38 and 39: Vulnerable Deltas of Indian Coast P
Page 40 and 41: The Coastal and Marine Tourism of E
Page 42 and 43: Mangroves and Coastal Changes in In
Page 44 and 45: Investigating inter--‐annual and
Page 46 and 47: High Resoluation Holocene Climatic
Page 48 and 49: Geochemical characteristics of surf
Page 50 and 51: Seawater Intrusion Due to Temporal
Page 52 and 53: Mineral magnetic study of coastal s
Page 54 and 55: Phosphorus dynamics of water - sedi
Page 56 and 57: Evaluation of major hydrogeochemica
Page 58 and 59: A Methodology to Develop a Report C
Page 60 and 61: Seaweeds culture and its impacts on
Page 62 and 63: An Environment Management Plan In A
Page 64 and 65: Subsurface Geomorphological Study o
Page 66 and 67: Morphosedimentary evidences of rapi
Page 68 and 69: Hydrogeochemical assessment of huma
Page 70 and 71: Sea Surface Height (SSH)-based Pote
Page 72 and 73: Tropical storm off Myanmar coast sw
Page 74 and 75: Integrated approach for assessment
Page 76 and 77: Need for evolutionary studies in An
Page 78 and 79: Integrated Coastal Zone Management
Page 80 and 81: Assessment Over Impacts Of Sealevel
Page 82 and 83: Holocene sea-level changes in the c
Page 84 and 85: Evidence of Holocene flooding-storm
Page 86 and 87:
Study of Wave Parameters along the
Page 88 and 89:
Shore Specific Sediment Characteris
Page 90 and 91:
occurrences of microfossils. In the
Page 92 and 93:
Vulnerability assessment of the sou
Page 94 and 95:
Artificial Coastal Lakes (Paleo-lag
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Conference program and abstracts - Coastal-Change.Org

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