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Recent Publications

Vacher, H.L., Hutchings, W.C., and Budd, D.A., in press, Metaphors and Models: The ASR bubble in the Floridan aquifer. Ground Water

Hughes, J.D., Sanford, W.E., and Vacher, H.L., 2004, Numerical simulation of double-diffusive finger convection. Water Resources Research, v. 41, W01019, doi:10.1029/2003WR002777.

Budd, D.A. and Vacher, H.L., 2004, Matrix permeability of the confined Floridan aquifer. Hydrogeology Journal, v. 12, p. 531-549

Meadows, D.G., Caballero, J.P. Kruse, S.E., Vacher, H.L., and Ross, Michael, 2004, Variation of salinity in brackish-water lenses of two Florida Keys. Journal of Coastal Research, v. 20, n. 2, p. 386-400.

Vacher, H.L., and Mylroie, J.E., 2002, Eogenetic karst from the perspective of an equivalent porous medium, Carbonates and Evaporites, v. 17, p. 182-196.

D.A. Budd and Vacher, H.L., 2002, Facies control on matrix permeability in the upper Floridan aquifer. In: Martin, J.B., Wicks,C.M. and Sasowsky, I.D.(Editors), Hydrogeology and Biology of Post-Paleozoic Carbonate Aquifers. Karst Waters Institute Special Publ 7, p. 14-24.

Mylroie, J.E. and Vacher, H.L.,1999, A conceptual view of carbonate island karst. In: Palmer, A.N., Palmer, M.V. and Sasowsky, I.D. (Editors), Karst Modeling. Karst Waters Institute Special Publ 5, p. 48-57.

Vacher, H.L., and Quinn, T.M. (editors), 1997, Geology and Hydrogeology of Carbonate Islands. Elsevier, Amsterdam, 948 pp.

Vacher, H.L., 1997, Chapter 1, Introduction: Varieties of carbonate islands and a historical perspective, in Vacher, H.L., and Quinn, T.M. (editors), 1997, Geology and Hydrogeology of Carbonate Islands. Elsevier, Amsterdam, p. 1-33.

Vacher, H.L., and Rowe, M.P, 1997, Chapter 2, Geology and hydrogeology of Bermuda, in Vacher, H.L., and Quinn, T.M. (editors), 1997, Geology and Hydrogeology of Carbonate Islands. Elsevier, Amsterdam, p. 35-90.

R.B. Halley, Vacher, H.L. and E.A.Shinn, 1997, Chapter 5, Geology and hydrogeology of the Florida Keys, in Vacher, H.L., and Quinn, T.M. (editors), 1997, Geology and Hydrogeology of Carbonate Islands. Elsevier, Amsterdam, p. 217-248.

Mink, J. and Vacher, H.L., 1997, Chapter 25, Hydrogeology of Northern Guam, in Vacher, H.L., and Quinn, T.M. (editors), 1997, Geology and Hydrogeology of Carbonate Islands. Elsevier, Amsterdam, 743-761.

Juster, T., Kramer, P.A., Vacher, H.L., Swart, P.K. and Stewart, M., 1997. Groundwater flow beneath a hypersaline pond, Cluett Key, Florida Bay, Florida. Journal of Hydrology, v. 197, p. 339-369.

Vacher, H.L., Hearty, P.J. and Rowe, M.P., 1995. Stratigraphy of Bermuda: Nomenclature, concepts, and status of multiple systems of classification, in H.A. Curran and B. White (eds.), Terrestrial and Shallow Marine Geology of the Bahamas and Bermuda. Geol. Soc. Am. Spec. Pap. 300, p.271-294.

Mylroie, J.E., Carew, J.L. and Vacher, H.L., 1995. Karst development in the Bahamas and Bermuda, in H.A. Curran and B.White (eds.), Terrestrial and Shallow Marine Geology of the Bahamas and Bermuda. Geol. Soc. Am. Spec. Pap. 300, p. 251-267.

Selected older publications

Hearty, P.J. and Vacher, H.L., 1994. Quaternary stratigraphy of Bermuda: A high-resolution pre-Sangamonian rock record. Quaternary Science Reviews, v.13, p.685-697.

Budd, D.A., Hammes, U., and Vacher, H.L., 1993. Calcite cementation in the upper Floridan aquifer: A modern example for confined-aquifer cementation models? Geology, v. 21, p. 33-36.

Jones, I.C., Vacher, H.L., and Budd, D.A. 1993. Transport of Ca, Mg and SO4 in the Floridan aquifer, west-central Florida: Implications to cementation rates. Journal of Hydrology, v. 143, p. 455-480.

Jones, I.C. and Vacher, H.L., 1993. Calculating ion transport within the Floridan aquifer, west-central Florida. In: S.B. Upchurch, J.E. Moore, and A. Zaporozac (Eds.), Hydrology and Hydrogeology for the 90's. Proceedings American Institute of Hydrologists, p. 113-119.

M. E. McClain, Swart, P.K., and Vacher, H.L., 1992. The hydrogeochemistry of early meteoric diagenesis in a Holocene deposit of biogenic carbonates. Journal of Sedimentary Petrology, v. 62, p. 1008-1022

Hearty, P.J., Vacher, H.L., and Mitterer, R.M., 1992. Aminostratigraphy and ages of Pleistocene limestones of Bermuda. Bulletin Geological Society of America, v. 104, p. 471-480.

Vacher, H.L. and Wallis, T.N., 1992. Comparative hydrogeology of Bermuda and Great Exuma Island, Bahamas. Ground Water, v. 30, p. 15-20.

Vacher, H.L., Wightman, M.J., and Stewart, M.T., 1992. Hydrology of meteoric diagenesis: Effect of Pleistocene stratigraphy on fresh-water lenses of Big Pine Key, Florida, in C.H. Fletcher and J.E. Wehmiller (eds.), Quaternary Coasts of the United States: Lacustrine and Marine Systems. Soc. Econ. Paleontologists and Mineralogists Special Publication, No. 48, p. 213-219.

Vacher, H.L. and Mylroie, J.E., 1992. Geomorphic evolution of topographic lows in Bermudian and Bahamian islands. In: R. Bain (Ed.), Proceedings of Fifth Symposium of Geology of Bahamas, p. 221-234.

Vacher, H.L., Jones, G.W., and Stebnisky, R.J., 1992. Heterogeneity of the surficial aquifer in west-central Florida: In: Scott, T.M., and Allmon, W.D. (Eds.), Plio-Pleistocene stratigraphy and paleontology of South Florida, Florida Geological Survey Special Publication 36, p. 93-99

Wallis, T.N., Vacher, H.L., and Stewart, M.T., 1991. Hydrogeology of freshwater lens beneath a Holocene strandplain, Great Exuma, Bahamas. Journal of Hydrology, v. 125, p. 93-109.

Vacher, H.L., Farkas, T.A., and Robinson, J.L., 1991. Time net for ground-water flow in an idealized coastal wedge. Journal of Coastal Research, v. 7, p. 31-38.

Budd, D.A. and Vacher, H.L., 1991. Predicting the thickness of fresh-water lenses in carbonate paleo-islands. Journal of Sedimentary Petrology, v. 61, p. 43-53.

Stebnisky, R.J. and Vacher, H.L., 1991. Hydraulic conductivity predicted as a function of grain size, sorting and porosity for dune, washover and foreshore depositional environments on a barrier island in Florida, USA: In: Bachu, S. (ed.), Parameter Identification and Estimation for Aquifer and Reservoir Characterization, Proceedings of 5th Canadian/American Conference on Hydrogeology, p 42-55.

Vacher, H.L., Bengtsson, T.O., and Plummer, L.N., 1990. Hydrology of meteoric diagenesis: Residence time of meteoric groundwater in island fresh-water lenses with application to aragonite-calcite stabilization rate in Bermuda. Bulletin Geological Society of America, v. 102, p.223-232.

Wallis, T.N. and Vacher, H.L., 1990. Shape of fresh-water lens in small carbonate islands: Exuma vs Bermuda and the effect of climate. In: Krishna, J.H. et al (eds.), Proceedings of International Symposium on Tropical Hydrology and Fourth Caribbean Islands Water Resources Congress, p. 317-326.

Wightman, M.J., Stewart, M.T. and Vacher, H.L., 1990. Geophysical mapping and hydrogeologic analysis of fresh-water lenses at Big Pine Key, Florida: In, Krishna, J.H. et al (eds.), Proceedings of International Symposium on Tropical Hydrology and Fourth Caribbean Islands Water Resources Congress, p. 301-309.

H.L. Vacher, Jones, G.W., and Stebnisky, R.S., 1990. The need for lithostratigraphy: How heterogeneous is the surficial aquifer? In, Allmon, W.D., and Scott, T.M. (eds.), Southeastern Geological Society of America Annual Fieldtrip Guidebook

Vacher, H.L., Rowe, M., and Garrett, P., 1989. The Geologic Map of Bermuda. Ministry of Works and Agriculture, Bermuda Government, Hamilton. 1:25,000-scale.

Vacher, H.L. and Bengtsson, T.O., 1989. Effect of hydraulic conductivity on the residence time of meteoric ground water in Bermudian-and Bahamian- type islands. In: Mylroie, J.E. (ed.), Proceedings of Fourth Symposium of Geology of Bahamas, p. 337-351.

Vacher, H.L. and Hearty, P.J., 1989. History of Stage-5 sea level in Bermuda: Review with new evidence of a brief rise to present sea levelduring Substage 5a. Quaternary Science Reviews, v. 8, p. 159-168.

Vacher, H.L., 1988. Dupuit-Ghyben-Herzberg analysis of strip-island lenses. Bulletin Geological Society of America, v. 100, p. 580-591.

Vacher, H.L., 1988. Ground water in barrier islands -- Theoretical analysis and evaluation of the unequal-sea level problem. Journal of Coastal Research, v. 4, p. 139-148.
Vacher, H.L. and Harmon, R.S., 1987. Penrose Conference Field Guide to Bermuda Geology, 48 pp.

Ayers, J.F. and Vacher, H.L., 1986. Hydrogeology of an atoll island: A conceptual model from detailed study of a Micronesian example. Ground Water, v. 24, p. 185-198.

Harmon, R.S., Mitterer, R.M., Kriausakul, N., Land, L.S., Schwarcz, M.P., Garrett, P., Larson, A.J., Vacher, H.L., and Rowe, M., 1983. U-series and amino-acid racemization geochronology of Bermuda: Implications for eustatic sea-level fluctuation over the past 250,000 years, Paleogeography, Paloeclimatology, Paleoecology., v. 44, p. 41-70.

Ayers, J.F. and Vacher, H.L., 1983. A numerical model describing unsteady flow in a fresh-water lens. Water Resources Bulletin, v. 19, p. 785-792.

Tucker, R.W. and Vacher, H.L., 1980. Effectiveness of discriminating beach, dune, and river sands by moments and cumulative weight percentages. Journal of Sedimentary Petrology., v. 50, p. 165-172.

Vacher, H.L. and Ayers, J.F. 1980. Hydrology of small oceanic islands -- Utility of an estimate of recharge inferred from the chloride content of fresh-water lenses, Journal of Hydrology, v. 45, p. 21-37.

Vacher, H.L., 1978. Hydrogeology of Bermuda -- Significance of an across-the-island variation in permeability, Journal of Hydrology, v. 39, p. 207-226. (H.L. Vacher)

Vacher, H.L., 1978. Hydrology of small ocean islands -- Influence of atmospheric pressure on the water table, Ground Water, v. 16, p. 417-423.

Plummer, L.N., Vacher, H.L., Mackenzie, F.T., Bricker, O.P. and Land, L.S., 1976. Hydrogeochemistry of Bermuda: A case history of ground-water diagenesis of biocalcarenites, Bulletin Geological Society of America., v. 7, p. 1301-1316.

Lafon, G.M. and Vacher, H.L., 1975. Diagenetic reactions as stochastic processes -- Application to Bermudian eolianites, in E. H. T. Whitten (ed.), Quantitative Models in the Earth Sciences: Geol. Soc. America Memoir, 142, p. 187-204.

H.L. Vacher 1974. Ground Water Hydrology of Bermuda, Government of Bermuda Public Works Department, Hamilton, 87 pp.

H.L. Vacher, 1973. Coastal dunes of Younger Bermuda, in D. R. Coates (ed.), Coastal Geomorphology, Publications in Geomorphology, SUNY at Binghamton, p. 335-391.