Officers and Committee Members of the Chapter

Contact information

Chair, Stephen E. Smith, FN-96

  • 402 Via Royal
  • Walnut Creek, CA 94596
  • 925-934-1051

    Vice Chair, Lesley Ewing, FN-93

  • 1679 Tacoma Ave
  • Berkeley CA 94707
  • (510) 527-7899

    Treasurer, Joan Boothe, MN-07

  • 2435 Divisadero St.
  • San Francisco, CA 94115
  • 415-346-5934

    Secretary, Von Hurson, MN-10


    Webmaster, Michael F. Diggles, FN-92

  • 6432 Irwin Court
  • Oakland, CA 94609-1123
  • 510-821-1786

    Editor-Newsletter, Anders Jepsen, FN-03

  • 1300 Oakmont Drive #4
  • Walnut Creek CA 94595
  • 925-322-8893

    Field-Trip Coordinator, Rick Blake, FN-01

  • 3555 Carlsbad Court
  • Pleasanton, CA 94588
  • 925-426-8751

    World Headquarters

  • 46 East 70th Street
  • New York, NY 10021
  • Telephone 212-628-8383


    Chair: Stephen E. Smith, Ph.D., FN-96, previously served as Vice Chair from 2001 through 2002, Chair from 2003 through 2005, Secretary from 2005 through 2012, and Vice Chair from 2015 to 2017. He is the Managing Director of Oceanearth, Inc. a U.S. 501(c)(3) non-profit organization that has supported research for the preservation of maritime-related natural and cultural resources since 1996. As a professional dive instructor, he serves as the Dive Safety Officer for Saint Mary’s College of Moraga, Calif. In this capacity, he trains students in Scientific Diving procedures for maritime archaeological research projects and field schools. Smith has both participated in and led Flag Expeditions. He is currently a consultant providing analytics, modeling, and simulation support to the energy industry.

    Vice Chair: Lesley Ewing, Ph.D., FN-93 (who also served as Chapter Chair starting in 2001). She is a coastal engineer and has traveled through much of the US examining coastal dynamics and the major components that stabilize or modify shorelines. Her interest in the Explorers Club developed out of her work with Sylvia Earle and Graham Hawkes building Deep Flight -- two one-person submersibles that will give researchers and scientists access to vast areas of the ocean. In 2003, she pursued watery fame as she trained to qualify as a pilot of Deep Flight.

    Treasurer: Joan Boothe, MN-07 (who also served as Chapter Chair starting in 2015). Joan N. Boothe is considered an expert on Antarctic history and has been interviewed on NPR, taught a course in the Stanford University Continuing Studies program, guest lectured on Antarctic tour ships and spoken on the Antarctic for a variety of venues. She remembers reading her first story of icy adventure in the Antarctic when she was 8. Today she has built one of the most comprehensive private collections of books on Antarctica in the United States, containing more than 1,800 individual titles, along with thousands of journal articles. Joan has now traveled to the Antarctic 12 times, including making a 67-day circumnavigation of the Antarctic continent aboard an icebreaker. She is the author of the critically acclaimed book The Storied Ice: Exploration, Discovery, and Adventure in Antarctica's Peninsula Region. A graduate of Wellesley College, Joan was elected to Phi Beta Kappa with an honors degree in economics. She further received an MBA in finance from the University of California, Berkeley, and has also pursued doctoral studies in organizational behavior at U.C. Berkeley.

    Secretary, Von Hurson, MN-10,

    Webmaster, Michael Diggles, FN-92, Geologist since 1977; (mineralogy, geochronology, volcanoes, earthquakes), lead geologist, Sierra Nevada Ecosystem Project, authored over 100 scientific papers since 1978. He carried Flag 161 on a study of endangered flora in the Siskiyous.

    Newsletter Editor: Anders Jepsen, Ph.D. FN-03, Anders was Chapter Chair from 2011–2013 and took on the Newsletter in 2015. He became chair in 2011, had been Treasurer for several years then VP. As a young man he performed seven years of geological mapping and gold exploration in the Canadian Northwest Territories. He was in the field to study the emission of pollutant gases from active volcanoes and directed a multi-year part of the Maryland Power Plant Siting Program to provide ground-truth data for air pollution control models. Anders has been a founder or co-founder of five high-tech companies, has also explored for minerals in the Argentine Andes and in Northern Labrador, and he is now very active in the development of solar energy technology. Previous Newsletter Editors include Lee Langan, FN-99 2001–2014; Sue Estey, FN-92, 1999–2000, Mike Diggles, FN-92, 1996–1998, and Bob Schmieder, FN-86, 1992–1995.

    Date created: March 17, 1995
    Last modified: July 23, 2018
    Created by: Mike Diggles, Webmaster, Northern California Chapter, Explorers Club. email to Mike.

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