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| 1 | Impact of Sea-Level-Rise and Human Activities in Coastal Regions:An Overview显示文摘Coastal regions are becoming increasingly vulnerable to flooding because of accelerating sea-level-rise(SLR),local ground subsidence,and the changes in topography and morphology.Moreover,coastal areas are usually highly urbanized and increased human activities have an effect on the stability and preservation of the environment.For instance,the growing demand for new lands to accommodate the population and the industrial facilities in China has required the design and the deployment of land-reclamation projects from the ocean,with a marked impact on fragile coastal eco-systems.Specifically,the Yangtze River and Pearl River Estuary,two major estuaries of the world,have long been subject to intensive human activities over the past decades.Long-term ground subsidence evolution,topographic changes,and morphological variation of the coastal regions have drawn great attention.This paper provides an overview of well-established Earth Observation(EO)remote sensing(RS)technologies that are employed to continuously monitor the changes of urbanized regions.The combined use of EO-based DInSAR analyses along with the knowledge of the geomorphology of the coastal regions allows a more precise picture of the SLR risk in the investigated coastal regions.In this paper,we will concentrate on remote sensing technologies that allow the gathering of heterogeneous information,such as those based on the use of synthetic aperture radar(SAR),satellite altimeters and tide gauge data.We will underline how human activities trigger changes in the living environment of coastal zones and the associated risks for the population.Observed coastline changes,coastal regions terrain subsidence,and offshore bathymetry have a pronounced effect on the increasing risk of flooding.Accordingly,we also present insights into some inundation model projections employed for evaluating the potential flooding risk in coastal regions. | Qing ZHAO Antonio PEPE Adam DEVLIN Shuangshang ZHANG Francesco FALABELLA Giovanni ZENI Qiang WANG Jingzhao DING Danan DONG Min LIU Qing XU Xia LEI Jiayi PAN | 2021 | Journal of Geodesy and Geoinformation Science2021，4，1： | 5 |
| 2 | Remote sensing study of wetlands in the Pearl River Delta during 1995-2015 with the support vector machine method显示文摘 | Xiaosong HAN Jiayi PAN Adam T. DEVLIN | 2018 | Frontiers of Earth Science2018，12，3： | 3 |
| 3 | Remote sensing observations of phytoplankton increases triggered by successive typhoons显示文摘 | Lei HUANG Hui ZHAO Jiayi PAN Adam DEVLIN | 2017 | Frontiers of Structural and Civil Engineering2017，11，4： | 1 |
| 4 | An ultraviolet to visible scheme to estimate chromophoric dissolved organic matter absorption in a Case-2 water from remote sensing reflectance显示文摘In a typical Case-2 coastal water environment(here,the Pearl River Estuary(PRE),China),chromophoric dissolved organic matter(CDOM)and suspended particulates dominate the water optical properties,and CDOM fluorescence contributes considerably to surface water reflectance.In this paper,an ultraviolet(UV)to visible scheme to retrieve CDOM absorption(ag)is developed based on a set of in situ observations.First,the CDOM UV absorption and spectral slope(Sg)are derived directly from the visible remote sensing reflectance;then the Sg is extrapolated to obtain the spectrum from UV to visible spectral range.This algorithm performs well,with an overall mean absolute percent difference(MAPD)of^30%,~5%and^6%for the estimation of ag in 250–450 nm,Sg over 250–400 nm,and 250–700 nm,respectively.The effectiveness and stability of the algorithm is further demonstrated in capturing the distribution pattern of CDOM absorption in the PRE from satellite ocean color imagery with multiple spatial and spectral resolution,namely:the Visible Infrared Imaging Radiometer Suite(VIIRS)(750 m/Multispectral),the Ocean and Land Color Instrument(OLCI)(300 m/Multispectral),the Hyperspectral Imager for the Coastal Ocean(HICO)(100 m/Hyperspectral),and the Landsat 8 Operational Land Imager(OLI)(30 m/Multispectral).The UV to visible scheme can benefit the CDOM absorption estimation in two aspects:1)it is free from the disturbance of suspended matter;2)it avoids uncertainties caused by the low signalto-noise ratio(SNR)of ag measurements in the visible range.The algorithm is effective in revealing multiple scales of variation of CDOM absorption from ocean color observations. | Xia LEI Jiayi PAN Adam DEVLIN | 2020 | Frontiers of Earth Science2020，14，2： | 1 |
| 5 | 多区域海洋M_(3)分潮的观测与验证显示文摘M_(3)海洋分潮(三阶潮或一日三次周期潮汐)经常受到忽视,因而对M_(3)分潮进行更精确的分析研究,可以提高潮汐预测、海洋数值模拟、大地测量的准确度.尽管M_(3)分潮在整体潮汐所占比例较小,但由于陆架共振及其他影响,某些沿海地区M_(3)潮可大大增强.本文使用157个验潮站的数据,以及9年时间窗口,对水位变化进行了潮汐谐波分析.本文还分析了太阴M_(3)潮,将这些结果与全球同化的模型数据(TPXO9v5a)进行了比较,重点研究了西太平洋和欧洲陆架地区.与验潮站数据相比,大部分区域TPXO9v5a导出的M_(3)潮振幅和相位滞后表现良好,但在沿海和地形复杂的区域,其结果误差较大.在欧洲陆架海域使用了一个浅水数值模型(MARS),该模型在某些地区优于TPXO的结果.在欧洲陆架海域的五个子区域中,TPXO在三个地点的M_(3)振幅及相位滞后预测的均方根误差(RMSE)更小.而在其他子区域,MARS模拟结果更为准确.本文发现一些地点的M_(3)振幅有着显著长周期变化,这与海平面上升(SLR)导致的共振效应有关,这种共振效应可以调制海洋对天文引潮力的响应.本文使用MARS模型,应用各种海平面上升的预设情境,对M_(3)振幅的长周期变化进行了模拟研究.结果表明随着时间的推移,超过一半验潮站M_(3)振幅长期变化方向(增加或减少)与MARS模型结果一致. | Adam Thomas DEVLIN 潘家祎 Déborah IDIER | 2023 | 中国科学:地球科学2023，53，10： | 0 |
| 6 | Versioned geoscientific workflow for the collaborative geosimulation of human-nature interactions-a case study of global change and human activities显示文摘Global change refers to changes in the relationship between humans and nature.It is desirable to actively integrate human social activities into the unified framework of global change so that their mutual relations and functional mechanisms can be understood.This complicated issue necessitates an appropriate method allowing domain experts to collaboratively contribute their knowledge to geoscientific research.Also,an efficient approach to optimize experimentation is of great importance.The reproducibility of research methods and results needs to be improved to boost the sharing of geographic knowledge and resources.This paper proposes a versioned geoscientific workflow and characterizes its full lifecycle using Virtual Geographic Environments,intending to facilitate and improve research related to the interactions between global change and human activities.The geoscientific workflow management is realized using the concept of version management,making geographic simulation methods and computational results easily reproducible and extendable.The sharing and reuse of geographic knowledge in various forms are archived through version management of geoscientific workflows.A versatile prototype system is implemented which enables the visual modeling of geoscientific workflows,the interactive optimization and collaborative evaluation of geoscientific workflows at runtime,the multi-dimensional dynamic visualization of geo-workflow outputs,and role-based access control for data security. | Yuting Chen Hui Lin Ling Xiao Qi Jing Lan You Yulin Ding Mingyuan Hu Adam Thomas Devlin | 2021 | International Journal of Digital Earth2021，14，4： | 0 |
| 7 | Multi-regional observations and validation of the M_(3)ocean tide显示文摘Improved determinations of the oft-ignored third-degree ocean tides can yield better accuracy for tidal predictions,numerical model solutions,and geodesy.While only a small part of tidal range,these components can be larger at certain coastal locations due to shelf resonances and other effects.Here,we discuss observations of the M3lunar terdiurnal tide using 9-year windowed tidal harmonic analyses at 157 tide gauges compares to a global assimilation model(TPXO9v5a),with a focus on the Western Pacific and the European Shelf.TPXO9v5a does well in estimating the observed M_(3)amplitudes and phase lags in most regions,though determinations in coastal zones and in morphologically complex areas are coarse and often inaccurate.We also employ a shallow-water model(MARS)on the European Shelf,which can yield localized improvement over TPXO.In five subregions of the European Shelf,regional root-mean-squared-errors(RMSEs)are lower(and thus a better fit)at three locations for TPXO for amplitudes,and three for phase lags,with MARS simulations being a better fit in the other subregions.We also show that some locations have experienced significant long-term increases and/or decreases in the M_(3)amplitude over time,likely related to resonance changes under sea level rise(SLR)which can modulate the oceanic response to astronomical forcing.This hypothesis is explored for Europe using the MARS model by applying various sea level rise scenarios,showing that the directionality(positive or negative)of the long-term changes in M_(3)amplitudes over time match the model results for more than half of our validation stations. | Adam Thomas DEVLIN Jiayi PAN Déborah IDIER | 2023 | Science China Earth Sciences2023，66，10： | 0 |
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