7 Explorers Club, N. Calif. Officers


Officers and Committee Members of the Chapter

Contact information

Chair, Lesley Ewing, FN-93

  • chair@explorersnorca.org

    Vice Chair, Jimmy Friedman MN-19

  • vicechair@explorersnorca.org

    Treasurer, Anna Freitas, MN-17

  • treasurer@explorersnorca.org

    Secretary, Joyce Chang, MN-17

  • secretary@explorersnorca.org

    Webmaster, Michael F. Diggles, FN-92

  • webmaster@explorersnorca.org

    Editor-Newsletter, Anders Jepsen, FN-03

  • newsletter@explorersnorca.org

    Field-Trip Coordinator, Tom Dietz, FN-20

  • fieldtrips@explorersnorca.org

    Social Media, Margeigh Novotny, Sirdar

  • socialmedia@explorersnorca.org

    World Headquarters

  • 46 East 70th Street
  • New York, NY 10021
  • Telephone 212-628-8383
  • http://www.explorers.org/


    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 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.

    Vice Chair: Jimmy Friedman MN-19, Martial Arts Professor, Real estate Developer. Jimmy has taken groups to Japan, India, Myanmar, Nepal and many other Asian countries for over thirty years. Also organizes many international Martial arts seminars in the Bay area. He started 11th Street Dojo (Aikido) in 1986. Currently visits India every year to teach martial arts and participates with the Mumbai Aikido dojo in their goal of teaching one million women self-defense. .

    Treasurer: Anna Freitas, MN-17 has a background that includes a 35-year career in Finance including CFO of Wells Fargo Credit Card. Educational credentials include an MBA in Finance from University of Minnesota. As practical experience in non-profits, she has served as Treasurer for the Past President's Club of the Stanford Women's Club of the East Bay and also for Parent-Teacher-Student Association for Indian Valley Elementary School.

    Secretary, Joyce Chang, MN-17 is a corporate lawyer and has prior experience serving as Secretary and a member of the Board of Directors of a local nonprofit (Partnerships for Change), so she is quite familiar with the duties and responsibilities listed for Chapter Secretary in our bylaws and officer position descriptions.

    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. ORCID 0000-0002-9946-0247

    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.

    Field Trips: Tom Dietz, FN-20. Tom's overlapping careers in science, business, and flying have allowed for a life filled with adventure. From global travel and exploration, scuba and submersible diving, cargo, mountain, and backcountry flying, and multiple outdoorsman and conservationist pursuits, to the science of biochemical and molecular adaptation of organisms in unusual and extreme environments, Tom brings a unique set of skills and experiences to his endeavors.

    Social Media: Margeigh Novotny, Sirdar.00╩Margeigh is a product designer whose work has mainly focused on the design of large-scale systems and new technologies. She is Vice President of Product Design at Wikipedia, where she has recently been exploring methods for quantifying and visualizing the "knowledge gaps" between different language versions of Wikipedia; and ways of quantifying and communicating "trustworthiness" of content on Wikipedia. In prior work, Margeigh led╩a multi-year program at Microsoft to understand and codify etiquette in different╩cultural contexts in order to create algorithms that behave in accordance with acceptable social norms (with regard to what kind and how much private information they ask for in order to perform some task for the user). An Architect by training, Margeigh is drawn to complex, first-of-category design problems that have required immersive research in social behavior and human perception.╩

    Date created: March 17, 1995
    Last modified: July 22, 2022
    Created by: Mike Diggles, Webmaster, Northern California Chapter, Explorers Club. email to Mike.

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