EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Quarterly Report of Anworth Mortgage Asset
Corporation (the "Company") on Form 10-Q for the quarterly period ended
September 30, 2002, as filed with the Securities and Exchange Commission on
November 14, 2002 (the "Report"), I, Joseph Lloyd McAdams, Chairman of the
Board, President and Chief Executive Officer of the Company, certify, pursuant
to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that:

     1. The Report fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934, as amended; and

     2. The information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company.


                                      By: /s/ Joseph Lloyd McAdams
                                          --------------------------------------
                                            Joseph Lloyd McAdams
                                            Chairman of the Board, President and
                                            Chief Executive Officer
                                            November 14, 2002