<div>The A1 poster incorporates 4 images of Australia taken from space by Earth observing satellites. The accompanying text briefly introduces sensors and the bands within the electromagnetic spectrum. The images include examples of both true and false colour and the diverse range of applications of satellite images such as tracking visible changes to the Earth’s surface like crop growth, bushfires, coastal changes and floods. Scientists, land and emergency managers use satellite images to analyse vegetation, surface water or human activities as well as evaluate natural&nbsp;hazards.</div>

Geoscience Australia acquires satellite imagery from a range of Earth observation satellites. This poster focuses on Australian States and Territories and various satellite applications.

Stratovolcanoes are steep-sided volcanoes that can erupt explosively eg. Mt St Helens. See internal and external volcanic features, plot the path of lava flows and see the risk faced by local towns. This product comprises one set of thirty A4 stratovolcano paper models, ready to cut out and construct a 3D model. Assembly instructions included. Suitable for primary level Years K-6 and secondary level Years 7-10.

Spatial distribution of sponge species richness and its relationship with environmental variables are important for the informed monitoring of ecosystem health and marine environmental management and conservation within the Oceanic Shoals Commonwealth Marine Reserve, in the Timor Sea region, northern Australia. However, the spatially continuous data of sponge species richness is not readily available, and the relationship is largely unknown. In this study, we modelled sponge species richness data of 77 samples using random forest (RF) and generalised linear model (glm) and their hybrid methods with geostatistical techniques (i.e. ordinary kriging (OK) and inverse distance weighting (IDW)) based on seabed biophysical variables. These methods are RF, RFOK, RFIDW, glm, glmok and glmidw that is a new hybrid method. We also examined effects of model averaging using four averaged methods (RFOKRFIDW, RFRFOKRFIDW, glmokglmidw and glmglmokglmidw) and the effects of various predictor sets on the accuracy of predictive models. Four feature selection methods, 1) averaged variable importance (AVI), 2) Boruta, 3) knowledge informed AVI (KIAVI) and 4) recursive feature selection (rfe), were used for RF; and four variable selection methods: 1) stepAIC, 2) dropterm, 3) anova and 4) RF, were employed to select glm predictive models. Predictive models were validated based on 10-fold cross validation. Finally the spatial distribution of sponge richness was predicted using the most accurate model and examined. The main findings are 1) the initial input predictors affect the status of important and unimportant variables; 2) AVI is not always reliable and KIAVI is recommended for selecting RF predictive model, 3) using Boruta can improve the accuracy in comparison with the full model, but it may lead to sub-optimal models; and features selected using rfe are not optimal and can be even misleading; 4) the accuracy of glm predictive model did not align with AIC, deviance explained (%) and deviance explained adjusted (%), suggesting that conventional model selection approaches for glm is unable to identify reliable predictive models; 5) joint application of RF and AIC is a useful model selection approach for developing glm predictive models; 6) the goodness of fit should not be used to assess glm predictive models; 7) the hybrid methods have significantly improved the predictive accuracy for both RF and glm; and the hybrid methods of RF and geostatistical methods are considerably more accurate and able to effectively model count data; and 8) the relationships of sponge species richness with the predictors are non-linear, and high sponge species richness is usually associated with hard seabed features. This study further confirms that: 1) the initial input predictors affect the model selection for RF; 2) the inclusion of highly correlated predictors could improve predictive accuracy, providing important guideline for pre-selecting predictors for RF; and 3) the effects of model averaging are method dependent or even data dependent. This study also provides important information for future monitoring design, particularly on the areas where the management and conservation of sponge gardens should be focused.

No abstract available

The Map Reading Guide is an ideal resource for a wide range of map users and is an excellent and simplistic introduction to topographic maps which are suitable for anyone with an interest in maps. It contains: - an explanation of what is a topographic map - steps on how to read topographic maps, including explanations of map scale and how to use a map scale to calculate distance - the differences between grid north, true north and magnetic north - an explanation of symbols used on topographic map symbols - how hills and mountains are shown on maps using relief shading, hypsometric tinting, and contours - what a datum is and why there are different datum - explanations of the difference between geographic and grid coordinates - how to quote grid references from topographic maps - how to plan a successful trip using topographic maps - using Global Positioning System (GPS) receivers and magnetic compasses with topographic maps - using a topographic map to find your current position and to set a course. This product is the guide/map roamer card combination.

The comprehensive Landslides Kit contains the following education products; - Landslides student activities booklet of 11 reproducible activities and suggested answers (catalogue item 23853) - Australian Landslide slide set - (item 25330) - Landslide A4 paper 3D model - class set of 30 (item 33165) - Slump A4 paper 3D model - class set of 30 (item 33186) Suitable for primary Years 5-6 and Secondary Years 7-10.

Crystals are truly fascinating. Crystals are found almost anywhere - in the classroom,kitchen, bathroom, and in nature, in the rocks beneath your feet. Some people are impressed by their shapes, colours and natural beauty. Others are intrigued with theirchemical structure and study the science of Crystallography. Other people believe that crystals have "powers" and can influence moods. This booklet will help you and your students understand the science of crystals - explore the facts, and dispel the myths.

Class set of 30 A4 elevation images of Australia. The teachers' guide provides information about the creation of this special image and gives suggestions for classroom activities.

Geoscience Australia acquires satellite imagery daily, from a range of earth observation satellites, at our ground reception facilities at stations in Alice Springs and Hobart. The satellite image data vary in their spatial extent and resolution and have a range of applications. This poster provides some examples of the imagery provided by Geoscience Australia to a range of Government and other clients.