{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T05:31:53Z","timestamp":1772083913728,"version":"3.50.1"},"reference-count":77,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2022,7,12]],"date-time":"2022-07-12T00:00:00Z","timestamp":1657584000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Iraq is facing a water shortage due to water scarcity and anthropogenic activities. The recent advance in technologies in geophysical methods has made groundwater monitoring possible. Time-variable gravity data and outputs of the climatic model, as well as rainfall data, are integrated to investigate the spatio-temporal mass variations caused by groundwater changes over Iraq. The findings are: (1) For the entire study period (04\/2002\u201312\/2020), Period I (04\/2002\u201312\/2006), Period II (01\/2007\u201312\/2017), and Period III (01\/2018\u201312\/2020), the study region had an average annual precipitation rate of 223.4, 252.5, 194.2, and 311.6 mm\/y, respectively. (2) The average Terrestrial Water Storage variations (\u0394TWSs) varied from \u22125.79 \u00b1 0.70 to \u22125.11 \u00b1 0.70 mm\/y based on the three different gravity solutions with a mean of \u22125.51 \u00b1 0.68 mm\/y for the entire investigated period. (3) For Periods I, II, and III, the average \u0394TWS fluctuation was calculated to be +6.82 \u00b1 1.92, \u22126.20 \u00b1 1.17, and +28.58 \u00b1 12.78 mm\/y, respectively. (4) During the entire period, Periods I, II, and II, the groundwater fluctuation was averaged at \u22124.86 \u00b1 0.68, +2.47 \u00b1 2.20, \u22123.79 \u00b1 1.20, and \u22124.63 \u00b1 12.99 mm\/y, respectively, after subtracting the non-groundwater components. (5) At the beginning of the 2007 drought during Period II, a decline in rainfall rate, and significant groundwater withdrawal during Period III all appear to have contributed to groundwater depletion. The Euphrates and Tigris Rivers, as well as the Mesopotamian plain, receive water from the running streams created by the ground relief. The area of the Mesopotamian plain, which has a thicker sedimentary sequence that can reach 9000 m, is found to have a positive TWS signal, indicating that its groundwater potential is higher. The integrated approach is informative and cost-effective.<\/jats:p>","DOI":"10.3390\/rs14143346","type":"journal-article","created":{"date-parts":[[2022,7,12]],"date-time":"2022-07-12T03:50:36Z","timestamp":1657597836000},"page":"3346","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Monitoring Mass Variations in Iraq Using Time-Variable Gravity Data"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8900-6251","authenticated-orcid":false,"given":"Abdullah","family":"Othman","sequence":"first","affiliation":[{"name":"Department of Environmental Engineering, Umm Al-Qura University, Makkah 21955, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9034-9999","authenticated-orcid":false,"given":"Ahmed","family":"Abdelrady","sequence":"additional","affiliation":[{"name":"Faculty of Civil Engineering and Geoscience, Delft University of Technology, 2628 CN Delft, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4501-1910","authenticated-orcid":false,"given":"Ahmed","family":"Mohamed","sequence":"additional","affiliation":[{"name":"Department of Geology, Faculty of Science, Assiut University, Assiut 71516, Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,12]]},"reference":[{"key":"ref_1","unstructured":"United Nations, Department of Economic and Social Affairs (2013). 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