<?xml version="1.0" encoding="utf-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1700.sch" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<Product_Document xmlns="http://pds.nasa.gov/pds4/pds/v1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1700.xsd">
 <Identification_Area>
  <logical_identifier>urn:nasa:pds:apollodoc:a15doc:a15a_hfe_overview</logical_identifier>
  <version_id>1.0</version_id>
  <title>Overview of the Apollo 15 Heat Flow Experiment (HFE)</title>
  <information_model_version>1.7.0.0</information_model_version>
  <product_class>Product_Document</product_class>
  <Citation_Information>
   <author_list>Williams, D.R.</author_list>
   <editor_list>McLaughlin, S.A.</editor_list>
   <publication_year>2017</publication_year>
   <description>
    This document provides an overview of the Apollo 15 Heat Flow Experiment
    (HFE) which was part of the Apollo 15 Lunar Surface Experiments Package
    (ALSEP).
   </description>
  </Citation_Information>
  <Modification_History>
   <Modification_Detail>
    <modification_date>2017-02-01</modification_date>
    <version_id>1.0</version_id>
    <description>
     Creation. Extracted text the PDS3 catalog.
    </description>
   </Modification_Detail>
  </Modification_History>
 </Identification_Area>
 <Reference_List>
  <External_Reference>
   <reference_text>
    Apollo 15 Preliminary Science Report, NASA SP-289, published by NASA,
    Washington, D.C., 1972.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Apollo Scientific Experiments Data Handbook, NASA Technical Memorandum
    X-58131, JSC-09166, published by NASA Johnson Space Center, Houston, Texas,
    Aug. 1974 (revised Apr. 1976).
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Keihm, S.J., and M.G. Langseth, Jr., Surface brightness temperatures at the
    Apollo 15 heat flow site: Thermal conductivity of the upper 15 cm of
    regolith, Proceedings of the Lunar Science Conference, 4th, Volume 3, pages
    2503-2513, 1973.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Keihm, S.J., J.L. Chute, K. Peters, and M.G. Langseth, Apollo 15 measurement
    of lunar surface brightness temperatures - thermal conductivity of the upper
    1 1/2 meters of regolith, Earth Planetary Science Letters, 19, No. 3, pages
    337-351, July 1973.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Langseth, M.G., Jr., Lunar Heat-Flow Experiment: Final Technical Report: 6
    Jun. 1966 - 30 Jun. 1975, NASA-CR-151619, CU-4-77, 289p, Lamont-Doherty
    Geological Observatory of Columbia University, Palisades, New York, 1977.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Langseth, M.G., Jr., S.P. Clark Jr., J.L. Chute, Jr., S.J. Keihm, and A.E.
    Wechsler, The Apollo 15 Lunar Heat-Flow Measurement, In The Moon, Volume 4,
    Issue 3-4, pages 390-410, 1972.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Langseth, M.G., Jr., S.J. Keihm, J.L. Chute, Jr., and A.E. Wechsler, Heat
    flow experiment, In Apollo 15 Preliminary Science Report, Section 11, NASA
    SP-289, published by NASA, Washington, D.C., 1972.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Langseth, M.G., Jr., S.J. Keihm, and J.L. Chute, Jr., Heat flow experiment,
    Apollo 15 Preliminary Science Report, NASA SP-330, 9-1, published by NASA,
    Washington, D.C., 1973.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Langseth, M.G., Jr., S.J. Keihm, and K. Peters, Revised lunar heat-flow
    values, Proceedings of the Lunar Science Conference, 7th, Volume 3, pages
    3143-3171, 1976.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <reference_text>
    Nagihara, M.G., Y. Saito, and P.T. Taylor, Reexamination Of the Apollo 15
    Heat Flow Data Toward Understanding Potential Causes Of The Long-Term
    Subsurface Warming Observed, In: Abstracts of Papers Submitted to the 41th
    Lunar and Planetary Science Conference, Volume 41, Abstract 1353, 2010.
   </reference_text>
  </External_Reference>
  <External_Reference>
   <doi>10.1029/2018JE005579</doi>
   <reference_text>
    Nagihara, S., W.S. Kiefer, P.T. Taylor, D.R. Williams, and Y. Nakamura,
    Examination of the long-term subsurface warming observed at the Apollo 15
    and 17 sites utilizing the newly restored heat flow experiment data from
    1975 to 1977, Journal of Geophysical Research: Planets, 123, 1125-1139,
    2018.
   </reference_text>
  </External_Reference>
 </Reference_List>
 <Document>
  <acknowledgement_text>
   Document provided by the NASA Space Science Data Coordinated Archive (NSSDCA,
   formerly NSSDC)
  </acknowledgement_text>
  <publication_date>2017</publication_date>
  <description>
   Overview of the Apollo 15 Heat Flow Experiment (HFE) which was part of the
   Apollo 15 Lunar Surface Experiments Package (ALSEP).
  </description>
  <Document_Edition>
   <edition_name>7-Bit ASCII Text version</edition_name>
   <language>English</language>
   <files>1</files>
   <Document_File>
    <file_name>a15a_hfe.txt</file_name>
    <document_standard_id>7-Bit ASCII Text</document_standard_id>
   </Document_File>
  </Document_Edition>
 </Document>
</Product_Document>
