CWSS Research
CWSS Publications
* = graduate student** = undergraduate student
Abouelmagd, A., and M. Ahmed (2024). Groundwater in North Africa: Effects of Climatic and Anthropogenic Pressures on Groundwater Availability. In: Hamimi, Z., et al. The Geology of North Africa. Regional Geology Reviews. Springer, Cham. https://doi.org/10.1007/978-3-031-48299-1_11
Ahmed, M., R. Abdelrehim*, M. Elshalkany*, and M. Abdrabou (2024). Impacts of the Grand Ethiopian Renaissance Dam on the Nile River's Downstream Reservoirs. Journal of Hydrology, 633: 130952. https://doi.org/10.1016/j.jhydrol.2024.130952
Bygate, M.*, and M. Ahmed (2024). Monitoring Water Quality Indicators over Matagorda Bay, Texas, Using Landsat-8. Remote Sensing, 16(7): 1120. https://doi.org/10.3390/rs16071120
Douglas, A.R., and D. Murgulet (2024). Chapter 5, Groundwater-Surface Water Interactions in the Coastal Zone. In Freshwater Inflows to Texas Bays and Estuaries: A Regional-Scale Review, Synthesis, and Recommendations. Eds. P.A. Montagna and A.R. Douglas. Springer Nature (In proof)
Douglas, A.R., P.A. Montagna, and T. Dellapenna (2024). Chapter 6, Influence of Inflows on Estuary Sediments. In Freshwater Inflows to Texas Bays and Estuaries: A Regional-Scale Review, Synthesis, and Recommendations. Eds. P.A. Montagna and A.R. Douglas. Springer Nature (In proof)
Felix, J.D. (2024). Modern analogs for ammonia flux from terrestrial hydrothermal features to the Archean atmosphere. Scientific Reports, 14: 1544. https://doi.org/10.1038/s41598-024-51537-2
Murgulet, D., C.V. Lopez*, A.R. Douglas, M. Eissa, and K. Das (2024). Nitrogen and carbon cycling and relationships to radium behavior in porewater and surface water: Insight from a dry year sampling in a hypersaline estuary. Marine Chemistry, 258: 104351. https://doi.org/10.1016/j.marchem.2024.104351
Qiao, X., T. Chu, E. Krell, P. Tissot, S. Holland, M. Ahmed, and D. Smilovsky (2024). Interpretation and Attribution of Coastal Land Subsidence: An InSAR and Machine Learning Perspective. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 17: 4768-4783. https://doi.org/10.1109/JSTARS.2024.3361391
Qiu, Y.*, J.D. Felix, D. Murgulet, and H. Abdulla (2024). Apportionment of NOx and NH3 emission sources in an urban coastal airshed: Insights from stable isotopes and a novel approach to intermittent sources. Atmospheric Environment, 329: 120533. https://doi.org/10.1016/j.atmosenv.2024.120533
Qiu, Y.*, J.D. Felix, D. Murgulet, and H. Abdulla (2024). Determining organic nitrogen emission sources and secondary formations in an urban coastal airshed via stable isotope techniques. Environmental Pollution, 343: 123152. https://doi.org/10.1016/j.envpol.2023.123152
Qui, Y.*, J.D. Felix, D. Murgulet, M. Wetz, and H. Abdulla (2024). Isotopic compositions of organic and inorganic nitrogen reveal processing and source dynamics at septic influenced and undeveloped estuary sites. Science of the Total Environment, 925: 171749. https://doi.org/10.1016/j.scitotenv.2024.171749
Turner, R.*, M. Ahmed, R. Bissell, L.O. Prothro, A.A. Shehata, and R. Coffin (2024). Structural and stratigraphic controls on reservoir architecture: A case study from the lower Oligocene Vicksburg Formation, Brooks County, Texas. Marine and Petroleum Geology, 160: 106627. https://doi.org/10.1016/j.marpetgeo.2023.106627
Felix, J.D., A. Berner, G.A. Wetherbee, S.F. Murphy, and R.C. Heindel (2023). Nitrogen isotopes indicate vehicle emissions and biomass burning dominate ambient ammonia across Colorado's Front Range urban corridor. Environmental Pollution, 316(1): 120537. https://doi.org/10.1016/j.envpol.2022.120537
Harris, E.*, P.A. Montagna, A.R. Douglas, L. Vitale, and D. Buzan (2023). “Influence of Formosa Plastics Company discharge on long-term dynamics of abiotic and biotic resources in Lavaca Bay, Texas”. Environmental Monitoring and Assessment 195(1): 1-24. https://doi.org/10.1007/s10661-022-10665-w
Li, Y., J. Liu, C. George, H. Herrmann, M. Gu, M. Yang, Y. Wang, A. Mellouki, Y. Pan, J.D. Felix, H. Kawashima, Z. Zhang, S. Wang, and Y. Zeng (2023). Apportioning atmospheric ammonia sources across spatial and seasonal scales by their isotopic fingerprint. Environmental Science and Technology, 57(43): 16424–16434. https://doi.org/10.1021/acs.est.3c04027
Seymore, J.*, J.D. Felix, H. Abdulla, D. Bergmann, M.L.A.M. Campos, and J. Florêncio (2023). Pandemic-related anthropogenic influences on the dissolved organic matter chemical character in São Paulo state wet deposition by ultrahigh-resolution mass spectrometry. ACS Earth Space Chem, 7(10): 1929–1946. https://doi.org/10.1021/acsearthspacechem.3c00076
Ahmed, M., Y. Chen, and M.M. Khalil (2022). Isotopic composition of groundwater resources in arid environments. Journal of Hydrology, 609: 127773. https://doi.org/10.1016/j.jhydrol.2022.127773
Douglas, A.R., D. Murgulet, M. Greige**, K. Das, J.D. Felix, and H.A. Abdulla (2022). Organic matter composition and inorganic nitrogen response to Hurricane Harvey's negative storm surge in Corpus Christi Bay, Texas. Frontiers in Marine Science - Coastal Ocean Process, 9. https://doi.org/10.3389/fmars.2022.961206
Fallatah, O., M. Ahmed, B. Gyawali*, and A. Alhawsawi (2022). Factors controlling groundwater radioactivity in arid environments: An automated machine learning approach. Science of the Total Environment, 830: 154707. https://doi.org/10.1016/j.scitotenv.2022.154707
Gyawali, B.*, M. Ahmed, D. Murgulet, and D.N. Wiese (2022). Filling temporal gaps within and between GRACE and GRACE-FO terrestrial water storage records: An innovative approach. Remote Sensing, 14(7): 1565. https://doi.org/10.3390/rs14071565
Gyawali, B.*, D. Murgulet, and M. Ahmed (2022). Quantifying changes in groundwater storage and response to hydroclimatic extremes in a coastal aquifer using remote sensing and ground-based measurements: The Texas Gulf Coast Aquifer. Remote Sensing, 14: 612.
Haley, M.*, M. Ahmed, E. Gebermichael, D. Murgulet, and M. Starek (2022). Land Subsidence in the Texas Coastal Bend: Locations, Rates, Triggers, and Consequences. Remote Sensing, 14: 192. https://doi.org/10.3390/rs14010192
Murgulet, D., C.V. Lopez*, and A.R. Douglas (2022). Radioactive and stable isotopes reveal variations in nearshore submarine groundwater discharge composition and magnitude across northwestern Gulf of Mexico estuaries. Science of the Total Environment 823: 153814. https://doi.org/10.1016/j.scitotenv.2022.153814
Ahmed, M., M. Aqnouy, and J. Elmessari (2021). Sustainability of Morocco's Groundwater Resources in Response to Natural and Anthropogenic Forces. Journal of Hydrology, 603: 126866. https://doi.org/10.1016/j.jhydrol.2021.126866
Douglas, A.R.*, D. Murgulet, and H. Abdulla (2021). Impacts of hydroclimatic variability on surface water and porewater dissolved organic matter in a semi-arid estuary”. Marine Chemistry, 235: 104006. https://doi.org/10.1016/j.marchem.2021.104006
Douglas, A.R.*, D. Murgulet, and P.A. Montagna (2021). Hydroclimatic variability drives submarine groundwater discharge and nutrient fluxes in an anthropogenically disturbed, semi-arid estuary. Science of the Total Environment, 755(2): 142574. https://doi.org/10.1016/j.scitotenv.2020.142574
Harfmann, J.L., G.B. Avery, H.D. Rainey, R.N. Mead, S.A. Skrabal, R.J. Kieber, J.D. Felix, J.R. Helms, and D.C. Podgorski (2021). Composition and lability of photochemically released dissolved organic matter from resuspended estuarine sediments. Organic Geochemistry, 151: 104164. https://doi.org/10.1016/j.orggeochem.2020.104164
Huang, S., Y. Fang, F. Zhu, E.M. Elliott, J.D. Felix, F. Wang, S. Li, D. Liu, L. Song, Z. Li, P. Fu, and S. Fu (2021). Multiyear measurements on 15N natural abundance of precipitation nitrate at a rural forested site. Atmospheric Environment, 253: 118353. https://doi.org/10.1016/j.atmosenv.2021.118353
Qiu, Y.*, and J.D. Felix (2021). Hurricane/tropical storm rainwater chemistry in the US (2008-2009). Science of The Total Environment, 798: 149009. https://doi.org/10.1016/j.scitotenv.2021.149009
Sharma, B.*, J.D. Felix, L. Myles, T. Butler, S. Summerlin, and M.S. Shimizu (2021). Wet deposition ethanol concentration at US Atmospheric Integrated Research Monitoring Network (AIRMoN) sites. Journal of Atmospheric Chemistry, 78(2): 125-138. https://doi.org/10.1007/s10874-020-09414-5
Ahmed, M. (2020). Sustainable management scenarios for northern Africa's fossil aquifer systems. Journal of Hydrology: 589, 125196. https://doi.org/10.1016/j.jhydrol.2020.125196
Ahmed, M., R. Turner*, M. Haley*, S. Shyrigh*, D. Colmenero*, and T. Penchala* (2020). Constructing a Geophysical Test Site for Coastal Community's Research and Education Activities. The Leading Edge, 40: 2.8-2.13. https://doi.org/10.1190/tle40030208.1
Berner, A.H.* and J.D. Felix (2020). Investigating ammonia emissions in a coastal urban airshed using stable isotope techniques. Science of the Total Environment: 707, 134952. https://doi.org/10.1016/j.scitotenv.2019.134952
Douglas, A.R.*, D. Murgulet, and P.A. Montagna (2020). Hydroclimatic variability drives submarine groundwater discharge and nutrient fluxes in an anthropogenically disturbed, semi-arid estuary. Science of the Total Environment, 142574. https://doi.org/10.1016/j.scitotenv.2020.142574
Douglas, A.R.*, D. Murgulet, and R.N. Peterson (2020). The use of radon and radium isotopes to determine submarine groundwater discharge in an anthropogenically disturbed, semi-arid estuary. Journal of Hydrology, 124369. https://doi.org/10.1016/j.jhydrol.2019.124369
Essam, D.*, M. Ahmed, A. Abouelmagd, and F. Soliman (2020). Monitoring temporal variations in groundwater levels in urban areas using Ground Penetrating Radar. Science of the Total Environment, 703: 134986. https://doi.org/10.1016/j.scitotenv.2019.134986
Felix, J.D., and D. Murgulet (2020). Nitrate isotopic composition of sequential Hurricane Harvey wet deposition: Low latitude NOx sources and oxidation chemistry. Atmospheric Environment, 117748. https://doi.org/10.1016/j.atmosenv.2020.11774
Lopez, C.*, D. Murgulet, and I.R. Santos (2020). Radioactive and Stable Isotope Measurements Reveal Saline Submarine Groundwater Discharge in a Semiarid Estuary. Journal of Hydrology, 125395. https://doi.org/10.1016/j.jhydrol.2020.125395
Murgulet, D., A.R. Douglas*, J.A. Herrera Silveira, I. Mariño Tapia, and A. Valle-Levinson (2020). Submarine groundwater discharge along the northern coast of the Yucatán Peninsula. Proceedings of the Sixteenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impact of Karst, San Juan, Puerto Rico. National Cave and Karst Research Institute Symposium 8. Carlsbad (NM): National Cave and Karst Research Institute. https://doi.org/10.5038/9781733375313.1060
Shimizu, M.S., S.L. Summerlin, J.D. Felix, J. Halls, G.B. Avery, R.J. Kieber, C.S. Lane, R.N. Mead, and J.D. Willey (2020). Variable ethanol concentrations and stable carbon isotopes reveal anthropogenic ethanol contributions to rainwater. Atmospheric Environment, 234: 117578. https://doi.org/10.1016/j.atmosenv.2020.117578
Spalt, N.*, D. Murgulet, and H. Abdulla (2020). Spatial variation and availability of nutrients at an oyster reef in relation to submarine groundwater discharge. Science of the Total Environment, 710: 136283. https://doi.org/10.1016/j.scitotenv.2019.136283
Díaz-Álvarez, E.A., J.D. Felix, and E. de la Barrera (2019). Elemental and isotopic assessment for Colombian orchids from a montane cloud forest: a baseline for global environmental change. Acta Physiol Plant, 41: 99. https://doi.org/10.1007/s11738-019-2893-y
Felix, J.D., J.A. Roebuck, R.N. Mead, J.D. Willey, G.B. Avery, and R.J. Kieber (2019). Methanol and ethanol concentrations in a Greenland ice core. Atmospheric Environment, 217: 116948. https://doi.org/10.1016/j.atmosenv.2019.116948
Huang, S., E.M. Elliott, J.D. Felix, Y. Pan, D. Liu, S. Li, Z. Li, F. Zhu, N. Zhang, P. Fu, and Y. Fang (2019). Seasonal pattern of ammonium 15N natural abundance in precipitation at a rural forested site and implications for NH3 source partitioning. Environmental Pollution, 247: 541–549. https://doi.org/10.1016/j.envpol.2019.01.023
Willey, J.D., G.B. Avery, J.D. Felix, R.J. Kieber, R.N. Mead, and M.S. Shimizu (2019). Rapidly increasing ethanol concentrations in rainwater and air. npj Climate and Atmospheric Science, 2: 3.
Murgulet, D., M. Trevino*, A. Douglas*, N. Spalt*, X. Hu, and V. Murgulet (2018). Temporal and spatial fluctuations of groundwater-derived alkalinity fluxes to a semiarid coastal embayment. Science of the Total Environment. Science of the Total Environment, 630: 1343-1359. https://doi.org/10.1016/j.scitotenv.2018.02.333
Spalt, N.*, D. Murgulet, and X. Hu (2018). Relating estuarine geology to groundwater discharge at an oyster reef in Copano Bay, Texas. Hydrology Journal, 564: 785-801. https://doi.org/10.1016/j.jhydrol.2018.07.048
Bighash, P.*, and D. Murgulet (2015). Application of factor analysis and electrical resistivity to understand groundwater contributions to coastal embayments in semi-arid and hypersaline coastal settings. Science of the Total Environment, 532: 688-701. https://doi.org/10.1016/j.scitotenv.2015.06.077
Tick, G.R., J.R. Harvell, and D. Murgulet (2015). Intermediate-Scale Investigation of Enhanced-Solubilization Agents on the Dissolution and Removal of a Multicomponent Dense Nonaqueous Phase Liquid (DNAPL) Source. Water Air and Soil Pollution, 226: 371. https://doi.org/10.1007/s11270-015-2636-7
Weber, E. T. II, and D. Denny (2009). 1-D inversion of magnetotelluric vertical electrical sounding curves: Defining coastal aquifers with freshwater-saltwater transition zones. Journal of Applied Geophysics.
Garrison, J.R. Jr., E.T. Weber, II, S. Potter Miller, G. McMechan, and X. Zeng (2009). Ground-penetrating Radar study of North Padre Island, Texas: Implications for barrier island internal architecture, models of micro-tidal barrier island growth, and Gulf of Mexico sea-level cyclicity. Jjournal of Sedimentary Research, 80(4): 303-319. https://doi.org/10.2110/jsr.2010.034
Published Datasets
Published datasets are publicly available at the links provided.Ahmed, M. 2023. Soil Water Assessment Tool (SWAT) model input datasets for the Baffin Bay watershed, Texas, 1998-01-01 to 2020-12-31. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/zzfm44t2
Ahmed, M. 2024. Soil Water Assessment Tool (SWAT) model output for sub-basins within the Baffin Bay watershed, Texas. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/fmz6065v
Ahmed, M. 2024. Spatial and temporal outputs of the Sediment and Water Assessment Tool (SWAT) model over the Baffin Bay watershed, Texas. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/vwry1w58
Murgulet, D., A. Douglas, and C. Lopez. 2023. Submarine groundwater discharge readings in semi-arid estuaries across the Texas coastal bend and associated water quality parameters obtained from 2014-09-29 to 2018-02-04. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/SJACB00R
Murgulet, D., C. Lopez, C. Barrera, and W. Wolfe. 2024. Groundwater elevation level data for monitoring wells located in the Baffin Bay, Texas watershed obtained from 2020-02-07 to 2022-03-23. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/tydfsncd
Murgulet, D., C. Lopez, C. Barrera, and W. Wolfe. 2024. Measurements of radium, radon, and nutrients in Baffin Bay, Texas from 2020-10-12 to 2022-08-11. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/x36ex5j7
Wetz, M.S., J.D. Felix, Y. Qiu, and D. Burch. (submitted) Nitrogen concentrations and isotopic compositions of Baffin Bay and its tributaries. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. https://doi.org/10.7266/3jzxecp8
Wolfe, W.W.*, Murgulet, D., Gyawali, B.*, and Sterba-Boatwright, B. (2023). Long-term radon-222 (222Rn) and hydroclimatic datasets for a coastal estuary, Corpus Christi Bay, Texas. Data in Brief, 51, 109651. https://doi.org/10.1016/j.dib.2023.109651
CWSS Reports
* = graduate student** = undergraduate student
Wetz, M.S., D. Felix, D. Murgulet, H. Abdulla, M. Ahmed (2023). An Integrated Assessment of Nutrient Loadings to Baffin Bay, Texas. Scientific report submitted to Texas General Land Office August 2023; p. 202; CMP project # 21-060-017-C677. https://www.glo.texas.gov/coastal-grants/_documents/grant-project/21-060-017-c677-final-rpt.pdf
Murgulet D., J.D. Felix, C.V. Lopez, Y. Qui*, C. Barrera*, C. Vickers*, A. Cox*, W. Wolfe*, B. Gyawali*, V. Murgulet (2021). Nonpoint Source Nutrient Pollution Study in Baffin Bay Texas, Phase 1. Scientific report submitted to Texas General Land Office October 2021; p. 71; NOAA award number: NA19NOS4190106; TGLO Contract No. 20-036-000-B744. https://www.glo.texas.gov/coastal-grants/_documents/grant-project/20-036-finalrpt.pdf
Hu, X., D. Murgulet, M.R. McCutcheon*, C.V. Lopez, A. Douglas* (2019). Evaluating Groundwater Exported Acidity in Copano Bay. Scientific report submitted to Texas General Land Office October 2019; p. 50; NOAA award number: NA16NOS4190174; TGLO Contract No. 17-180-000-9817. https://www.glo.texas.gov/coastal-grants/_documents/grant-project/17-180-final-rpt.pdf
Murgulet, D., A. Douglas*, C. Lopez, B. Gyawali*, V. Murgulet, W. Wolfe*, Z. Ruben**, and M. Greige** (2019). Impacts of Temporal and Spatial Variation of Submarine Groundwater Discharge on Nutrient Fluxes to Texas Coastal Embayments. Scientific report submitted to Texas General Land Office, September 2019; p. 76; NOAA award number: NA16NOS4190174; TGLO contract number: 17-182-000-9819. https://www.glo.texas.gov/coastal-grants/_documents/grant-project/17-182-final-rpt.pdf
Lopez, C.*, D. Murgulet, A. Douglas*, and V. Murgulet (2018). Impacts of Temporal and Spatial Variation of Submarine Groundwater Discharge on Nutrient Fluxes to Texas Coastal Embayments, Phase III (Baffin Bay). Scientific report submitted to Texas General Land Office, April 2018; p. 106; NOAA award number: NA15NOS4190162; TGLO Contract No. 16-060-000-9104. https://www.glo.texas.gov/coastal-grants/_documents/grant-project/16-060-final-rpt-corrected2.pdf
Douglas, A.*, D. Murgulet, M. Wetz, N. Spalt*, C. Lopez*, and H. Wang** (2017). Evaluating Groundwater Inflow and Nutrient Transport to Texas Coastal Embayments: Phase II (Aransas Bay). Scientific report submitted to Texas General Land Office, April 2017; p. 103; NOAA award number: NA14NOS4190139; TGLO Contract No. 15-047-000-8392. https://glo.texas.gov/coastal-grants/_documents/grant-project/15-047-evaluating-groundwater.pdf
Murgulet, D., M.S. Wetz, A. Douglas*, W. McBee*, N. Spalt*, and K. Linares** (2015). Evaluating Groundwater Inflow and Nutrient Transport to Texas Coastal Embayments. Scientific report submitted to Texas General Land Office August 2015; p. 102; NOAA award number: NA13NOS4190113; TGLO Contract No. 14-081-000-7949. https://www.glo.texas.gov/coastal-grants/_documents/grant-project/14-081-final-rpt.pdf
Felix, J.D., and E. Taylor* (2023). Per- and polyfluoroalkyl substances (PFAS) in the Nueces, Corpus Christi and Oso Bays. Annual report submitted to Coastal Bend Bays and Estuaries Program, August 2023; p. 38; CBBEP publication 175; Project number: 2206. https://www.cbbep.org/manager/wp-content/uploads/Per-and-Polyfluoroalkyl-Substances-PFAS-in-the-Nueces-Corpus-Christi-and-Oso-Bay.pdf
Felix, J.D., Y. Qui*, A. Cox*, and D. Murgulet (2021). Quantifying Septic Effluent Nitrogen Loading and Processing in the Baffin Bay Watershed. Final scientific report to the Coastal Bend Bays & Estuaries Program, April 2021; p. 25; CBBEP publication 144; Project number: 2005. https://www.cbbep.org/manager/wp-content/uploads/2005-Quantifying-Septic-Effluent-Nitrogen-Loading-and-Processing-in-the-Baffin-Bay-Watershed-04012021-144.pdf
Abdulla, H. and D. Murgulet (2021). Assessment of Organic Pollutants in Nueces Bay's Petroleum Brine Impacted Sediments. Final scientific report to the Coastal Bend Bays & Estuaries Program June 2021; p. 29; CBBEP publication 145; Project number: 1910. https://www.cbbep.org/manager/wp-content/uploads/1910-Assessment-of-Organic-Pollutants-in-Nueces-Bays-Petroleum-Brine-Impacted-Sediments-06012021-145.pdf
Felix, J.D., and J. Campbell* (2019). Investigating Reactive Nitrogen Sources that Stimulate Algal Blooms in Baffin Bay. Final scientific report to the Coastal Bend Bays & Estuaries Program, February 2019; p. 32; CBBEP publication 129; Project number: 1818. https://www.cbbep.org/manager/wp-content/uploads/1818-Final-Report.pdf
Selected Presentations
* = graduate student** = undergraduate student
Abdelrehim, R.*, Barseem, M., and Ahmed, M., 2023. Groundwater Resource Mapping for Sustainable Development of Arid Regions: Inferences from Time Domain Electromagnetic Approach Surveys. American Geophysical Union Fall Meeting.
Bygate, M.*, and Ahmed, M., 2023. Using Landsat 8 to Map Water Quality Indicators from Space: A Machine Learning Approach. American Geophysical Union Fall Meeting.
Yu, H., Felix, J.D., and Coffin, R.B., 2023. Stable Isotopes of Methane Indicate the Impact of Industrial Operations on Atmospheric Methane in a Coastal Urban Community. American Geophysical Union Fall Meeting.
Qui, Y.*, Felix, J.D., Murgulet, D., Wetz, M., and Abdulla, H.A., 2022. High-resolution Spatial Sampling Reveals DIN and DON Sources and Processing from Groundwaters to Surface Waters in a Semi-aris Estuary and Tributaries. American Geophysical Union Fall Meeting. B15F-1202.
Cox, A.*, Felix, J.D., and Qui, Y.*, 2021. Isotopic Composition of Dissolved Organic Nitrogen Sources Contributing to Semi-Arid Estuaries. American Geophysical Union Fall Meeting. H55Y-1031.
Qui, Y.*, Felix, J.D., Cox, A.*, and Murgulet, D., 2021. Using Stable Isotopes to Determine Sources and Processing of Inorganic and Organic Nitrogen in a Septic System Dominated versus Undeveloped Estuary Coastline. American Geophysical Union Fall Meeting. H55Y-1034
Colmenero, D.M.* and Ahmed, M., 2020. Subsurface Geologic Controls on the Dune Morphology in Barrier Islands. American Geophysical Union Fall Meeting. EP061-0032.
Gyawali, B.*, Murgulet, D., and Wolfe, W.*, 2020. Estimation of Groundwater Discharge Variability to the Gulf of Mexico Using Remote Sensing and Field Observations. American Geophysical Union Fall Meeting. H033-0007.
Haley, M.* and Ahmed, M., 2020. Quantifying Land Subsidence Along the South Texas Coast Using Radar Interferometric Techniques. American Geophysical Union Fall Meeting. G004-0010.
Murgulet, I.*, Douglas, A. R.*, Wolfe, W.*, and Abdulla, H.A.N., 2020. Nutrient and DOM distribution and transformation along a river course from headwaters to discharge: inorganic and organic nutrients. American Geophysical Union Fall Meeting. B047-0013.
Penchala, T.* and Ahmed, M., 2020. Modeling the Impact of Abandoned Wells on the Gulf Coast Aquifer in Texas. American Geophysical Union Fall Meeting. H050-09.
Vickers, C. M.*, Murgulet, D., Felix, J. D., Douglas, A. R.*, and Wolfe, W.*, 2020. Groundwater Contribution of Elevated Nutrients to a Hypersaline Estuary: Laguna Salada (Baffin Bay), Texas. American Geophysical Union Fall Meeting. H033-0008.
Wolfe, W.*, and Murgulet, D., 2020. Constraints on Radon and SGD Temporal Variability in a Semi-arid, Well Mixed Estuary. American Geophysical Union Fall Meeting. H033-0006.
Walker, L.**, Murgulet, D., Lopez, C.V., and Douglas, A.*, 2019. Temporal changes in the radiogenic signature of shallow groundwater and its potential implications in the SGD estimates in a semiarid area. American Geophysical Union Fall Meeting. H41K-1862,
Gyawali, B.*, Murgulet, D., and Ahmed, M., 2019. Quantifying change in groundwater storage in the coastal region of Texas. American Geophysical Union Fall Meeting. H43M-2239.
Greige, M.**, Murgulet, D., Douglas, A.R.*, and Abdulla, H.A., 2019. Hurricane Harvey’s impact on the DOM composition on the south shore of Corpus Christi Bay, Texas. American Geophysical Union Fall Meeting. B23A-05.
Douglas, A.R.*, Murgulet, D., and Abdulla, H.A., 2019. Seasonal trends and relationships between surface and porewater dissolved organic matter in a disturbed semi-arid estuary. American Geophysical Union Fall Meeting. B13G-2581.
McCutcheon, M.*, Hu, X., Murgulet, D., Douglas, A.R.*, Lopez, C.V., 2020. Examining the relationship between alkalinity and submarine groundwater discharge in a semi-arid estuary. ASLO Ocean Science Meeting 2020, San Diego. (February 2020).
Douglas, A.R.*, D. Murgulet, and R. Peterson. “Spatial and temporal variability of submarine groundwater discharge to a disturbed semi-arid estuary”. Oral presentation at Association for the Sciences of Limnology and Oceanography 2019 Aquatic Sciences Meeting, February 25-March 1, 2019, San Juan, Puerto Rico.
Ruben, Z.**, Murgulet, D., and Douglas, A.R.*, 2019. The presence and significance of radium and radon isotopes in south Texas estuaries. Association for the Sciences of Limnology and Oceanography 2019 Aquatic Sciences Meeting, February 25-March 1, 2019, San Juan, Puerto Rico.
Douglas, A.R.*, H. Abdulla, C. Jemison**, and D. Murgulet. “Molecular characterization of dissolved organic matter in surface and groundwater in a highly disturbed semi-arid secondary bay”. Oral presentation at Association for the Sciences of Limnology and Oceanography 2017 Aquatic Sciences Meeting, February 26-March 3, 2017, Honolulu, HI.
Lopez, C.V.*, A.R. Douglas*, N. Spalt*, and D. Murgulet. “Using radium isotopes to determine residence times in Baffin Bay, Texas”. Poster presentation at Association for the Sciences of Limnology and Oceanography 2017 Aquatic Sciences Meeting, February 26-March 3, 2017, Honolulu, HI.
Pena, M.M.**, A.R. Douglas*, and D. Murgulet. “Assessment of historical oil-field brine discharge influences on sediment supported radionuclide activities”. Poster presentation at Association for the Sciences of Limnology and Oceanography 2017 Aquatic Sciences Meeting, February 26-March 3, 2017, Honolulu, HI.
Murgulet, D., Narimani, R., Felix, J., and Kapoor, V., 2024. Hidden Hazards: Water Table Flooding and Coastal Contamination. Clean Coast Texas Lunch & Learn, February 15, 2024. https://www.youtube.com/watch?v=q_8kDmai1Kc
Murgulet, D., 2023. The Coastal Hydrologic Harmony: The Forces Shaping Submarine Groundwater Discharge, Nearshore Water Table Flooding and the Transport of Pollutants. Clean Coast Texas Lunch & Learn, August 17, 2023. https://www.youtube.com/watch?v=YjxSm3VrPLw
Murgulet, D., Vickers, C.*, Eissa, M., Murgulet, V., Jafarzadeh, A., and Kapoor, V., 2023. Mobilization and Transport of Contaminants to a Water Table Aquifer in Response to Extreme Wet Weather Events. Goldschmidt 2023. #455
Murgulet, D., and Lopez, C.*, 2019. Submarine Groundwater Discharge and Nutrient Input to a Semiarid and Hypersaline Estuary: Baffin Bay, Texas. Goldschmidt Geochemical Society Conference. Goldschmidt Abstracts, 2019 2377.
Douglas, A.*, D. Murgulet, N. Spalt*, and M. Treviño*. “The role of submarine groundwater discharge (SGD) as a pathway for nutrient discharge to Nueces Bay, Texas”. Oral presentation at Texas Bays and Estuaries Meeting, April 13-14, 2016, Port Aransas, Texas
Treviño, M.*, D. Murgulet, X. Hu, A. Douglas*, and N. Spalt*. “Alkalinity Dynamics in Groundwater Affected Secondary Bay in South Texas”. Oral presentation at Texas Bays and Estuaries Meeting, April 13-14, 2016, Port Aransas, Texas
Spalt, N.*, D. Murgulet, A. Douglas*, and M. Treviño*. “Postulating Hydrodynamic and Geochemical Processes Associated with Nutrient Delivery in Copano Bay, Texas”. Oral presentation at Texas Bays and Estuaries Meeting, April 1314, 2016, Port Aransas, Texas
Murgulet, D., Murgulet, V., Trevino, M.*, Douglas, A.*, and Hu, X., 2019. Alkalinity variation in a semi-arid and secondary bay of south Texas. 2019 Texas Sea Grant Research Symposium (April 2019). Invited talk
Gyawali, B.*, Murgulet, D., Ruben, Z.**, and Stearns, J.*, 2019. Quantifying temporal variation in groundwater storage and submarine groundwater discharge in the coastal region of Texas; 2019 Texas Sea Grant Research Symposium (April 2019).
Douglas, A.*, Murgulet, D., Abdulla. H., and Montagna, P., 2019. Molecular characterization of dissolved organic matter in a highly disturbed semi-arid bay. 2019 Texas Sea Grant Research Symposium (April 2019).
Douglas, A.R. (2022). “Potential Effects of Widening and Deepening the Matagorda Ship Channel on Groundwater Resources”. Presented at the Calhoun County Groundwater Conservation District meeting, April 25, 2022. Invited talk
Stearns, J*, and D. Murgulet (2019). An evaluation of the feasibility of the time-lapse electrical resistivity tomography method in quantifying submarine groundwater discharge in fine sediment and highly saline embayments. SEG Technical Program Expanded Abstracts 2019. https://doi.org/10.1190/segam2019-3216805.1
Murgulet, D. (2019). What does groundwater have to do with phytoplankton growth and hypoxia in South Texas estuaries? Geological Sciences Seminar, University of Texas at San Antonio. Invited talk
Murgulet, D. (2019). The impacts on groundwater from mining and “natural” occurrences of radium (Where does uranium occur in groundwater, how serious is the problem and what is the best course of action?). 2019 Texas Groundwater Conference, Austin. Invited talk
Murgulet, D., K. Coeckelenbergh, and K. Uhlman (2018). Freshwater Withdrawals Associated with Oil and Gas Production in Texas. Texas A&M University-Corpus Christi; 2018 UCOWR/NIWR Annual Water Resources Conference.
Gyawali, B.*, and D. Murgulet (2017). Prediction of Terrestrial Water Storage Using Different Modeling Approaches; 2018 UCOWR/NIWR Annual Water Resources Conference.
Douglas, A.*, D. Murgulet, and N. Spalt* (2016). “Effects of naturally occurring radium activity and activity ratio heterogeneity on derived water mass ages and SGD: lessons learned from Nueces Bay, Texas”. Oral presentation at Gulf Coast Association of Geological Societies, September 18-20, 2016, Corpus Christi, Texas.
Spalt, N.*, D. Murgulet, and A. Douglas* (2016). “Variation in SGD among depositional environments in a semi-arid coastal area: lessons learned from South Texas estuaries”. Oral presentation at Gulf Coast Association of Geological Societies, September 18-20, 2016, Corpus Christi, Texas.
Douglas, A.*, D. Murgulet, and N. Spalt* (2016). “Effects of naturally occurring radium and radon activity heterogeneity on derived water mass ages and SGD: lessons learned from a semi-arid south Texas estuary”. Poster presented at VI International Ra-Rn Workshop, July 18-21, 2016, Girona, Spain.
Spalt, N.*, D. Murgulet, and A. Douglas* (2016). “Coupling 222Rn measurements and geophysical techniques to constrain SGD occurrences in relation to estuarine depositional environments”. Poster presented at VI International Ra-Rn Workshop, July 18-21, 2016, Girona, Spain.
Douglas, A.*, and D. Murgulet (2014). “The Role of Groundwater and Submarine Groundwater Discharge in Coastal Systems”. Presented to Teachers on the Estuary Workshop and Mission-Aransas NERR, University of Texas Marine Science Institute, Port Aransas, Texas.
Douglas, A.*, and D. Murgulet (2014). “Linking Seasonal Variation of Submarine Groundwater Discharge to Nutrient Fluxes in Nueces Bay, Texas”. Oral presentation at NGWA Groundwater Summit, San Antonio, Texas 2014.
Murgulet, D., W. McBee*, A. Douglas*, and G. Scotch* (2014). “Linking Groundwater Discharge to Increased Salinities in a Semi-Arid Coastal Area”. Presented at 2014 GSA Annual Meeting, Vancouver, British Columbia.
McBee, W.*, G. Scotch*, A. Douglas*, and D. Murgulet (2014). “Linking Seasonal Variation of Submarine Groundwater Discharge to Hypoxia in Corpus Christi Bay”. Poster presented at 2014 GSA Annual Meetings, Vancouver, British Columbia.