Abstract The Capel and Faust basins (northern Lord Howe Rise) are located in the SW Pacific between Australia, New Zealand and New Caledonia. New seismic, gravity, magnetic and bathymetry data and rock samples have enabled the construction of a three-dimensional geological model providing insights into the crustal architecture and basin stratigraphy. Multiple large depocentres up to 150 km long and 40 km wide, containing over 6 km of sediment, have been identified. These basins probably evolved through two major Early Cretaceous rifting episodes leading to the final break-up of the eastern Gondwanan margin. Pre-break-up plate restorations and potential field data suggest that pre-rift basement is a collage of several discrete terranes, including a Palaeozoic orogen, pre-rift sedimentary basins and rift-precursor igneous rocks. It is likely that a pre-existing NW-trending basement fabric, inherited from the New England Orogen (onshore eastern Australia), had a strong influence on the evolution of basin architecture. This basement fabric was subjected to oblique rifting along an east–west vector in the ?Early Cretaceous to Cenomanian and NE–SW-oriented orthogonal rifting in the ?Cenomanian to Campanian. This has resulted in three structural provinces in the study area: Eastern Flank, Central Belt and Western Flank.

ABSTRACT Southern California steelhead ( Oncorhynchus mykiss ) occupy wildfire-prone watersheds from the Santa Maria River in Santa Barbara County to the Tijuana River at the U.S.-Mexico border. This tectonically active landscape is characterized by a Mediterranean climate, highly erosive soils, and a fire-dependent chaparral/coastal sage scrub-dominated plant community. These features create an unstable landscape to which the southernmost steelhead populations have adapted over the past 20 m.y. Wildfires help to create and maintain essential features of the species’ freshwater habitats, including boulder-forced and step pools, which provide oversummering rearing habitat, and spawning gravels, which are essential for reproduction. Disturbance events can also periodically render steelhead spawning and rearing habitat locally inaccessible or unsuitable for the freshwater reproductive phase of their life-history. The episodic nature of wildfires, floods, and droughts characteristic of southern California is reflected in river and stream evolution as a cyclical rather than a linear process. These disturbance events have become more frequent, intense, and extensive as a result of anthropogenic climate change and the increased extent of the urban-wildland human interface with chaparral/coastal sage scrub and forested lands, including the four U.S. national forests in southern California. The long-term viability of southern California steelhead populations requires that they be able to persist under the foreseeable natural disturbance regime characteristic of southern California. The recovery strategy pursued by the National Marine Fisheries Service (NMFS) for the listed endangered southern California steelhead has recognized the essential role of wildfire in the species’ life-history and its role as one of the major natural disturbances that pose a risk to the listed species. Using a wildfire-frequency analysis, NMFS has adopted a recovery strategy consisting of population redundancy and spatial separation to maximize the persistence of the species in the face of wildfire and associated geomorphic processes and facilitate the species’ ability to evolve adaptations in response to changing environmental conditions.

Abstract The volcanic island of Ischia has shown to have an important seismogenic potential, being the location of several destructive earthquakes, e.g. 1881, 1883 and 2017. The damage caused by these earthquakes was more connected to the proximity of the source to the surface than to their magnitude (M w < 5.2). The need to monitor and model this seismicity required the installation of a dense and modern seismic network. The first modern seismic station on the island was installed in 1993, and the network was successively increased with time. A meaningful improvement to the network was made after the earthquake that occurred on the 21 of August 2017. The network currently has 11 sites with velocimeters and some of them with accelerometers installed too. We analysed the seismic network configuration in comparison with the seismicity that characterizes the area to mark a starting point for future seismological analysis. The network is currently able to locate shallow earthquakes with duration magnitude greater or equal to 0 in the whole island.