Groundwater (GW) is the primary source of water for local inhabitants in the Yemen Republic. The Yemen Republic is dominated by an arid and semi-arid climate and suffers from a scarcity of natural resources and a soaring population growth rate. The IBB basin is one of the areas of main concern in Yemen, as the ascending local inhabitant’s activities have led to an increase in the water demand throughout the IBB City (The major City of IBB basin area). The area is mainly covered by stratified volcanic rocks of Tertiary age. The current research aims to delineate, identify, integrate, assess and map the groundwater potentiality (GWP) zones in the Tertiary volcanic aquifer of the IBB basin, Yemen utilizing space-borne data and weighted overlay method in GIS tools. Thematic layers such as lithology, slope, plain curvature, structural lineaments density, geomorphology, land use/land cover, drainage density, and rainfall intensity were used as factors in the geo-database building of the GW potentiality map. To each class of the factor layers, a fixed score was assigned. The scores were ranked, and the weighted sum for all layers was calculated. Finally, a GW potentiality map of the IBB basin area was constructed by integrating the weighted thematic digital maps. The integrated model’s results were classified into three main categories; low, moderate, and high GWP. The model validity was tested by considering the geospatial relationship between the resulted recharge productive zones and the distribution of the real-life productive wells and springs of IBB basin area. The integrated results successively delineate the GW potential zones in the IBB basin and raise awareness to methods useful for the management of GW resources and water recovery plans.

中文翻译：

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利用遥感和GIS工具绘制也门IBB盆地第三火山含水层的地下水潜力图

地下水（GW）是也门共和国当地居民的主要水源。也门共和国以干旱和半干旱的气候为主，自然资源匮乏，人口增长率高涨。IBB流域是也门最关注的地区之一，因为当地居民的活动增加导致整个IBB市（IBB流域主要城市）的需水量增加。该地区主要被第三纪的层状火山岩覆盖。当前的研究旨在利用GIS工具中的星载数据和加权叠加方法，对也门IBB盆地第三纪火山含水层中的地下水潜力（GWP）区进行划定，识别，整合，评估和绘制地图。主题层，例如岩性，坡度，曲率，结构线密度，地貌，土地利用/土地覆盖，排水密度和降雨强度被用作GW潜力图的地理数据库构建中的因素。对于每个类别的因子层，都分配了一个固定分数。对分数进行排名，并计算所有图层的加权总和。最后，通过整合加权的专题数字地图，绘制了IBB流域的GW潜力图。集成模型的结果分为三大类：低，中和高全球升温潜能值。通过考虑所得补给生产区与IBB盆地地区的实际生产井和泉水之间的地理空间关系来测试模型的有效性。