While at Georgia Tech in 1965, Clarke earned his scuba diving certification. He later participated in the NOAA/ Navy Scientist in the Sea program in 1972. He then went to the Navy Dive School in 1980. Clarke has remained an active scuba diver throughout his career.[3]
Clarke received his private pilot license in 1974 and instrument rating in 1978.[4] He currently owns aPiper Arrow[5] and volunteers as a pilot forAngel Flight Southeast.
Physiology continued to drive Clarke and in 1976 he completed his Doctor of Philosophy by evaluating changes in physiology and pharmacology in bivalve molluscs hearts atFlorida State University (FSU).[7]
While completing his doctorate at FSU, Clarke worked as instructor and director of development in the Department of Biological and Physical Sciences atThomas County Community College from 1975 to 1976.[2]
In 1977, Clarke left Case Western for a two–year Parker B. Francis Foundation Fellowship in the Department of Physiology at theUniversity of Florida College of Medicine.[2] The fellowship is named after the founder ofPuritan Bennett and supports pulmonary research.[8]
Clarke accepted an appointment as a Visiting Principal Fellow at theUniversity of Wollongong in April 1998 to advise on a doctoral project.[2] As of 2015, Clarke has served on five thesis committees from various institutions. Advisees have included Margie E. Bolton,[9] Elizabeth Jane McCarthy,[10] Rungchai Chaunchaiyakul,[11] Erich C. Frandrup,[12] and Adam J. Smith.[13]
In 1979, Clarke joined the team at the Naval Medical Research Institute (NMRI), now called theNaval Medical Research Center inBethesda, Maryland. He was the head of the Respiratory Physiology Branch of the Physiology Division in the Diving Medicine Department. When Clarke left NMRI in 1991, he was the Diving Life Support Equipment Program DirectorGM-14.
Clarke led a team of researchers, scientists and engineers while at NMRI. The projects included work on diving equipment and physiology that included high frequency ventilation experiments.
At NEDU, Clarke provides scientific oversight over engineering and physiological studiesRDT&E for US Navy diving operations. He also serves as an advisor forNaval Sea Systems Command policy regarding technical challenges.[14] This work includes equipment evaluations[15][16] and physiology experimentation.[17][18]
Clarke's interest in writing began early.[19] He published his first scientific article at age fifteen.[20] While an undergraduate engineering student, he was paid for two of his articles in theGeorgia Tech Engineer.[19]
Clarke assisted his writing mentor, author Max McCoy, with a chapter taking place at NEDU in McCoy's 2004 bookMoon Pool.[19]
In 2014, Clarke published his first novel,Middle Waters. It deals with two divers that set out to rescue aliens stranded on their spacecraft at the bottom of the sea. The government is aware of their presence and very interested in the alien technology. The divers soon find themselves caught between the alien civilization and their own government as they work to avert disaster while unknowingly competing with their friends in the recovery.
Award winning author and physician Rachel Scott suggested readers not "start this read at bedtime, if you plan to get any sleep!".[21]
Max McCoy, author for theIndiana Jones franchise from 1995 on, claimed thatMiddle Waters was a book he had wished he'd written and would read over and over again.[21] This was based partially on the fact that the main character is a diving scientist, a role that Clarke knows well and expertly conveys his knowledge to the reader.
Clarke also serves as a reviewer for research journals including the Journal of Applied Physiology, Ergonomics, Undersea Biomedical Research, and Annals of Biomedical Engineering.[2]
Clarke won first place in the 2010 "best first line in a comic vampire novel" contest held by the Ozark Creative Writers' Conference in Eureka Springs, Arkansas.[25]
Morrison JB, Clarke JR (2008). "Diving Physiology: free diving, breathing apparatus, saturation diving".In: Eds., NAS Taylor, H Groeller, Physiological Bases of Human Performance During Work and Exercise.
Clarke JR (2003). "Future of US Navy Diving".In: Naval Forces Under the Sea – A Look Back, A Look Ahead: 3–90 to 3–94.
Clarke JR, Flook V (1999). "Respiratory Function at Depth".In: The Lung at Depth, ed. CEG Lundgren and J Miller. In Series, Lung Biology in Health and Disease, ed. Claude Enfant. New York, Marcel Dekker:1–71.
Clarke JR (1999). "Underwater Breathing Apparatus".In: The Lung at Depth, ed. CEG Lundgren and J Miller. In Series, Lung Biology in Health and Disease, ed. Claude Enfant. New York, Marcel Dekker:429–527.
Clarke JR (1996). "Measurement of average resistance in underwater breathing apparatus".In: Book III, Drilling & Production Economics:227–230.
Clarke JR (1992). "Diver tolerance to respiratory loading during wet and dry dives from 0 to 450 msw".In: Lung Physiology and Divers' Breathing Apparatus. Ed. V. Flook and A.O. Brubakk., BPCC-AUD, Aberdeen:33–40.
Clarke JR (1992). "Impedance and power measurements in the testing of closed circuit UBA".In: Lung Physiology and Divers' Breathing Apparatus. Ed. V. Flook and A.O. Brubakk., BPCC-AUD, Aberdeen:85–93.
Clarke JR, Survanshi S, Thalmann ED, Flynn ET (1989)."Limits for mouth pressure in underwater breathing apparatus (UBA)".In: Eds. Lundgren and Warkander, Physiological and Human Engineering Aspects of Underwater Breathing Apparatus. Undersea and Hyperbaric Medical Society, Inc. Bethesda, MD. Archived from the original on February 23, 2015.
Casey L, Clarke JR, Fletcher J, Ramwell P (1982). "Cardiovascular, Respiratory, and Hematologic Effects of Leukotriene D4 in Primates".In: Samuelsson and Paoletti, Eds. Advances in Prostaglandin, Thromboxane, and Leukotrien Research Series, Vol. 9, Leukotrienes and Other Lipoxygenase Products. Raven Press, New York.9:201–10.PMID6211952.
Chaunchaiyakul R, Groeller H, Clarke JR, Taylor NA (2004). "The impact of aging and habitual physical activity on static respiratory work at rest and during exercise".American Journal of Physiology. Lung Cellular and Molecular Physiology.287 (6): L1098–106.doi:10.1152/ajplung.00399.2003.PMID15246978.S2CID1448707.
Nuckols ML, Clarke JR, Marr WJ (1999). "Assessment of oxygen levels in alternative designs of semiclosed underwater breathing apparatus".Life Support & Biosphere Science: International Journal of Earth Space.6 (3):239–49.PMID11542685.
Nuckols ML, Clarke J, Grupe C (1998). "Maintaining safe oxygen levels in semiclosed underwater breathing apparatus".Life Support & Biosphere Science: International Journal of Earth Space.5 (1):87–95.PMID11540469.
Clarke JR (1996). "A priori models in the testing of diving life support equipment".Life Support & Biosphere Science: International Journal of Earth Space.2 (3–4):125–31.PMID11538561.
Taylor NA, Clarke JR (1993). "Pulmonary function hysteresis during compression to, and decompression from 31.3 ATA".Acta Physiologica Scandinavica.148 (4):371–8.doi:10.1111/j.1748-1716.1993.tb09572.x.PMID8213192.
Clarke JR, Jaeger MJ, Zumrick JL, O'Bryan R, Spaur WH (1982). "Respiratory resistance from 1 to 46 ATA measured with the interrupter technique".Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology.52 (3):549–55.doi:10.1152/jappl.1982.52.3.549.PMID6461620.
Clarke JR (1978). "The effect of high pressure on the rhythmicity of bivalve hearts".Comp. Biochem. Physiol.60A (2):151–160.doi:10.1016/0300-9629(78)90221-9.
Clarke JR (1978). "The response of an intertidal bivalve heart to hypo osmotic and ionic stress at high pressure".Comp. Biochem. Physiol.61A:35–42.doi:10.1016/0300-9629(78)90273-6.
Clarke JR, Ferris V (2012). "The Use of One-Sample Prediction Intervals for Estimating CO2 Scrubber Canister Durations".Navy Experimental Diving Unit Technical Report 12-03.
Clarke JR (2007). "Review of MARCORSYSCOM operational requirements for Enhanced Underwater Breathing Apparatus (EUBA) using simulation software".Navy Experimental Diving Unit Technical Report 07-11 (Classified).
Clarke JR, O'Connor PE (2004). "Testing of a prototype Special Operations gas mask".Navy Experimental Diving Unit Technical Report 04-27(Classified).
Naggiar ER, Sanchack KE, Clarke JR (2002). "Comparison of Draeger Divesorb Pro to Sofnolime 812 in the MK 25 Mod 2 SEAL Delivery Vehicle, MK 16 Mod 0, and Viper VSW canisters".Navy Experimental Diving Unit Technical Report 02-02 (Classified).
Clarke JR (2002). "Evaluation of the pre-production model self-contained operational utility tank (SCOUT) high pressure air system. Navy Experimental Diving Unit Technical Report 02-01 (Classified)".{{cite journal}}:Cite journal requires|journal= (help)
Clarke JR (2001). "Evaluation of the Self-Contained Operational Utility Tank (SCOUT) high pressure air system".Navy Experimental Diving Unit Technical Report 8-01 (Classified).
Crepeau L, Clarke JR (1998). "Recommended canister limits for the Draeger LAR V/MK 25 UBA using 408 L-grade and 812 D-grade Sofnolime".Navy Experimental Diving Unit Technical Report 9-97 (Classified).
Crepeau L, Clarke JR (1997). "CBR protective respirator-induced performance decrements during Navy-relevant operational tasks".Navy Experimental Diving Unit Technical Report 2-97 (Classified).
Clarke JR, Maurer J, Southerland DE, Junker DL (1997). "Evaluation of the Diving Systems International EXO-26 BR full face mask".Navy Experimental Diving Unit Technical Report 1-97 (Classified).
Clarke JR, Maurer J, Junker DL (1996). "Evaluation of the SIVA 55 (S-55) semi-closed underwater breathing apparatus".Navy Experimental Diving Unit Technical Report 14-96 (Classified).
Clarke JR, Knafelc M, Junker DL, Allain SC (1996). "Evaluation of the Fullerton Sherwood S-24 (SIVA) semi-closed underwater breathing apparatus".Navy Experimental Diving Unit Technical Report 9-96 (Classified).
Clarke JR, Knafelc M, Junker DL, Allain SC (1996). "Evaluation of the Draeger LAR V Nitrox (LAR 7) semi-closed underwater breathing apparatus".Navy Experimental Diving Unit Technical Report 8-96 (Classified).
Clarke JR, Knafelc M, Junker DL, Allain SC (1996). "Evaluation of the Draeger Extreme semi-closed underwater breathing apparatus".Navy Experimental Diving Unit Technical Report 7-96 (Classified).
Clarke JR, Junker DL, Allain SC (1996). "Evaluation of the US Divers DC-55 semi-closed underwater breathing apparatus".Navy Experimental Diving Unit Technical Report 5-96 (Classified).
Baiss D, Southerland DG, Clarke JR (1995). "MK 3 Mod 0 Lightweight Dive System (LWDS) air flow capacity".Navy Experimental Diving Unit Technical Report 12-95 (Classified).
Clarke JR, Russell K, Crepeau L (1993). "MK 16 canister limits for SDV operations".Navy Experimental Diving Unit Report 2-93.
Clarke JR (1989). "Formulation of elastic loading parameters for studies of closed-circuit underwater breathing systems".Navy Medical Research Institute Technical Report 89-89, Bethesda.
Clarke JR, Homer LD, Flynn ET (1983). "Efficiency of high frequency ventilation as determined by nitrogen washouts: a model study".Navy Medical Research Institute Technical Report 83–09.
Clarke JR, Mints Jr WE, Bradley ME (1981). "An improved method of compensating whole body plethysmographs".Navy Medical Research Institute Report 81-10.
Clarke JR (1979). "Smoking and Diving".Public Information Brochure for Florida Sea Grant. MAFS 7.
Clarke JR (1968). "Holography the crystal ball of sound".Georgia Tech Engineer.25 (4):26–29.
Clarke JR (1967). "The Depth Challenger glass spheres for use in research submersibles".Georgia Tech Engineer.29 (6):12–17.
^"John Clarke Online: About".JohnClarkeOnline.com. 6 August 2011.Archived from the original on 31 October 2018. RetrievedSeptember 9, 2018.John R. Clarke, Ph.D.
^Clarke, John R. (26 April 2011)."Me and My Arrow". JohnClarkeOnline.com.Archived from the original on 2015-01-22. Retrieved2015-02-22.
^Clarke, JR (1971). "The Effect of High Pressure on the Permeability of Sacchromyces cerevisiae to Vital Dye". Georgia Institute of Technology.{{cite journal}}:Cite journal requires|journal= (help)
^Clarke, JR (1976). "The Effect of High Pressure on the Physiology and Pharmacology of Hearts of Bivalve Molluscs". Florida State University.{{cite journal}}:Cite journal requires|journal= (help)
United States of America
