Arid
DOI10.1002/2016EF000524
Quantifying the role of urbanization on airflow perturbations and dunefield evolution
Smith, Alexander B.1; Jackson, DerekW. T.1; Cooper, J. Andrew G.1,2; Hernandez-Calvento, L.3
通讯作者Smith, Alexander B.
来源期刊EARTHS FUTURE
ISSN2328-4277
出版年2017
卷号5期号:5页码:520-539
英文摘要

Rapid urban development has been widespread in many arid regions of the world during the Anthropocene. Such development has the potential to affect, and be affected by, local and regional dune-field dynamics. While urban design often includes consideration of the wind regime, the potential impact of construction on the surrounding environment is seldom considered and remains poorly understood. In this study, regional airflow modeling during successive stages of urbanization at Maspalomas, Gran Canaria, Spain, indicates significant and progressive flow perturbations that have altered the adjacent dunefield. Significant modifications to the boundary layer velocity, mean wind directionality, turbulence intensity, and sediment flux potential are attributed to the extension of the evolving urban geometry into the internal boundary layer. Two distinct process/response zones were identified: (1) the urban shadow zone where widespread dune stabilization is attributed to the sheltering effect of the urban area on surface wind velocity; and (2) the acceleration zone where airflow is deflected away from the urbanized area, causing an increase in sediment transport potential and surface erosion. Consistent coherent turbulent structures were identified at landform and dunefield scales: counter-rotating vortices develop in the lee-side flow of dune crests and shedding off the buildings on the downwind edge of the urban area. This study illustrates the direct geomorphic impact of urbanization on aeolian dunefield dynamics, a relationship that has received little previous attention. The study provides a template for investigations of the potential impact of urbanization in arid zones.


类型Article
语种英语
国家North Ireland ; South Africa ; Spain
收录类别SCI-E
WOS记录号WOS:000403546800008
WOS关键词AEOLIAN SEDIMENT TRANSPORT ; SOUTHWESTERN UNITED-STATES ; CANARY-ISLANDS ; SAND TRANSPORT ; OFFSHORE WINDS ; DUNE MOBILITY ; TRANSVERSE DUNES ; VEGETATION COVER ; KALAHARI DESERT ; LINEAR DUNES
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198371
作者单位1.Ulster Univ, Sch Geog & Environm Sci, Coleraine, Londonderry, North Ireland;
2.Univ KwaZulu Natal, Geol Sci, Sch Agr Earth & Environm Sci, Westville Campus, Durban, South Africa;
3.ULPGC, Inst Oceanog & Cambio Global IOCAG, Parque Cient Tecnol Taliarte, Las Palmas Gran Canaria, Spain
推荐引用方式
GB/T 7714
Smith, Alexander B.,Jackson, DerekW. T.,Cooper, J. Andrew G.,et al. Quantifying the role of urbanization on airflow perturbations and dunefield evolution[J],2017,5(5):520-539.
APA Smith, Alexander B.,Jackson, DerekW. T.,Cooper, J. Andrew G.,&Hernandez-Calvento, L..(2017).Quantifying the role of urbanization on airflow perturbations and dunefield evolution.EARTHS FUTURE,5(5),520-539.
MLA Smith, Alexander B.,et al."Quantifying the role of urbanization on airflow perturbations and dunefield evolution".EARTHS FUTURE 5.5(2017):520-539.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Smith, Alexander B.]的文章
[Jackson, DerekW. T.]的文章
[Cooper, J. Andrew G.]的文章
百度学术
百度学术中相似的文章
[Smith, Alexander B.]的文章
[Jackson, DerekW. T.]的文章
[Cooper, J. Andrew G.]的文章
必应学术
必应学术中相似的文章
[Smith, Alexander B.]的文章
[Jackson, DerekW. T.]的文章
[Cooper, J. Andrew G.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。