Abstract
An Mj7.6 (Mw7.5) earthquake occurred at 16:10 on January 1, 2024 at a depth of approximately
15 km in the Noto Peninsula, Ishikawa Prefecture. Many slope failures occurred mainly in the
epicenter area on the north coast of the Noto Peninsula. Dammed lakes were formed due to a
landslide in Sarutani, a tributary of the Kawarada River at Ichinose-machi in Wajima City. This
landslide has a total length of approximately 1.1 km and can be divided into at least seven areas
through detailed geomorphological observation. The topographic features indicate that multiple
landslides were connected to form a single landslide topography. The landslide deposits consist
of tuffaceous silt, sandstone, conglomerate from the Nawamata Formation (Nw) with only small
amount from the Konosuyama Formation (Ko). Past landslide deposits can also be observed on
the landslide scarps, and examination of these deposits may help to clarify landslide history.
